Which one of the following is correct? Lightning is formed, when

water vapor produces electricity in the clouds

similar charges of electricity rush towards each other and then get repelled

clouds strike against impurities in air and the friction burns up these impurities

strong opposite charges in different clouds break down the resistance offered by intervening air

water vapor produces electricity in the clouds

Which one among the following is the correct order of power consumption for light of equal intensity ?

CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb

CFL tube < Fluorescent tube < Incandescent bulb < Light emitting diode

Light emitting diode < CFL tube < Fluorescent tube < Incandescent bulb

CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb

Incandescent bulb < Light emitting diode < Fluorescent tube < CFL tube

Rainbow is formed due to

reflection and dispersion of light through a water droplet

refraction, reflection and dispersion of light through a water droplet

reflection and dispersion of light through a water droplet

When the distance between the object and the plane mirror increases

the distance between the image and the plane mirror decreasses

the size of the image will become less than the size of the object

the distance between the image and the plane mirror increases

the distance between the image and the plane mirror decreasses

The sun is seen before the actual sun rise because of .........

rectilinear propagation of light

The spread in colors in a rainbow on sky is primarily due to

total internal reflection of sunlight

The image of the object that we see forms on the retina of our eyes is

erect or inverted depends upon the intensity of light

erect or inverted depends upon the age of the person

Sodium vapor lamp is usually used in street light, because

light from this is monochromatic and will not split through water droplets

Red light is used as danger signal because it

produces least chemical reactions

Magnetic Resonance in Intestines

Magnetic Recording of Investigations

Magnetic Resonance in Intestines

The reason of mirage is

total internal reflection of light

Assertion (A): In the visible spectrum of light, red light is more energetic than green light.Reason (R) : The wavelength of red light is more than that of green light.Codes

A and R are individually true and R is the correct explanation of A

A and R are individually true but R is but the correct explanation of A

Which one of the following statements is correct ?In an astronomical telescope of refracting type

The aperture of the eyepiece is more than that of the objective

The objective and the eyepiece have the same focal length

The focal length of the objective is less than that of the eyepiece

The focal length of the objective is more than that of the eyepiece

The aperture of the eyepiece is more than that of the objective

A person standing in front of a mirror finds his image thinner but with normal height.The mirror in question is

Convex and cylindrical with axis vertical

Convex and cylindrical with axis horizontal

Assertion (A) : In a motion picture usually 24 frames are projected every second over the whole length of the filmReason (R) : Am image formed on the retina of eye persists for about 0./s after the removal of stimulus.Codes:

Both A and R are and R is the correct explanation of A

Both A and R are true but R is not the correct explanation of A

Assertion (A): Small glass beads fixed on traffic signal glow brightly when light falls upon them.Reason (R) : Light is totally reflected when the angle of incidence exceeds a certain critical value and light travelling in a denser medium is reflected from a rarer medium.Codes:

Both A and R are but R is not a correct explanation of A

Both A and R are true and R is the correct explanation of A

Both A and R are but R is not a correct explanation of A

Which one among the following is the correct order of

CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb

CFL tube < Fluorescent tube < Incandescent bulb < Light emitting diode

Light emitting diode < CFL tube < Fluorescent tube < Incandescent bulb

CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb

Incandescent bulb < Light emitting diode < Fluorescent tube < CFL tube

216 + Mcqs in Light in Physics Page 1 McqOptions

1.	A Swimming pool looks shallower than it really is, when see by a person standing outside near it, because of the phenomenon of
A.	refraction of light
B.	reflection of light
C.	dispersion of light
D.	None of these
Answer» B. reflection of light

Discussion

2.	A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.
A.	Plane, convex and concave
B.	Convex, concave and plane
C.	Concave, plane and convex
D.	Convex, plane and concave
Answer» D. Convex, plane and concave

Discussion

3.	Which one of the following is correct? Lightning is formed, when
A.	similar charges of electricity rush towards each other and then get repelled
B.	clouds strike against impurities in air and the friction burns up these impurities
C.	strong opposite charges in different clouds break down the resistance offered by intervening air
D.	water vapor produces electricity in the clouds
Answer» D. water vapor produces electricity in the clouds

Discussion

4.	Which one among the following is the correct order of power consumption for light of equal intensity ?
A.	CFL tube < Fluorescent tube < Incandescent bulb < Light emitting diode
B.	Light emitting diode < CFL tube < Fluorescent tube < Incandescent bulb
C.	CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb
D.	Incandescent bulb < Light emitting diode < Fluorescent tube < CFL tube
Answer» C. CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb

Discussion

5.	Soap bubble looks coloured due to
A.	disperion
B.	reflection
C.	interference
D.	Any one of these
Answer» D. Any one of these

Discussion

6.	Rainbow is formed due to
A.	refraction, reflection and dispersion of light through a water droplet
B.	reflection and dispersion of light through a water droplet
C.	only refraction of light
D.	only dispersion of light
Answer» B. reflection and dispersion of light through a water droplet

Discussion

7.	A student finds the writing on the black board as blurred and unclear when sitting on the last desk in a classroom. However, he sees it clearly when sitting on the front desk. Student suffers from a vision defect known as
A.	hypermetropia
B.	myopia
C.	presbyopia
D.	astigmatism
Answer» C. presbyopia

Discussion

8.	When the distance between the object and the plane mirror increases
A.	the image remains same
B.	the size of the image will become less than the size of the object
C.	the distance between the image and the plane mirror increases
D.	the distance between the image and the plane mirror decreasses
Answer» D. the distance between the image and the plane mirror decreasses

Discussion

9.	Butter paper is an example of ...........object.
A.	a transparent
B.	a translucent
C.	an opaque
D.	a luminous
Answer» C. an opaque

Discussion

10.	The sun is seen before the actual sun rise because of .........
A.	reflection
B.	refraction
C.	scattering of light
D.	rectilinear propagation of light
Answer» C. scattering of light

Discussion

11.	The spread in colors in a rainbow on sky is primarily due to
A.	dispersion of sunlight
B.	reflection of sunlight
C.	refraction of sunlight
D.	total internal reflection of sunlight
Answer» B. reflection of sunlight

Discussion

12.	A myopic eye can be corrected by using a
A.	convex lens
B.	concave lens
C.	cylindrical lens
D.	Plano convex lens
Answer» C. cylindrical lens

Discussion

13.	When light passes from one medium to another medium, which one of the following does not change?
A.	Instensity
B.	Velocity
C.	Wavelength
D.	Frequency
Answer» C. Wavelength

Discussion

14.	The apparatus used to measure the intensity of light is known as
A.	Anemometer
B.	Calorimeter
C.	Lux meter
D.	Altimeter
Answer» D. Altimeter

Discussion

15.	Night vision cameras do not use
A.	amplified light
B.	infrared sensors
C.	heat radiation from objects
D.	X - ray radiation from objects
Answer» E.

Discussion

16.	Wavelength range of visible light is
A.	200 - 900 nm
B.	600 - 780 nm
C.	300 - 800 nm
D.	390 - 780 nm
Answer» E.

Discussion

17.	The image of the object that we see forms on the retina of our eyes is
A.	always erect
B.	always inverted
C.	erect or inverted depends upon the intensity of light
D.	erect or inverted depends upon the age of the person
Answer» C. erect or inverted depends upon the intensity of light

Discussion

18.	Sodium vapor lamp is usually used in street light, because
A.	it is cheap
B.	light from this is monochromatic and will not split through water droplets
C.	it is pleasing to the eyes
D.	it is brightly illuminating
Answer» C. it is pleasing to the eyes

Discussion

19.	Optical fibre works on the principle of
A.	total internal reflection
B.	refraction
C.	scattering
D.	interference
Answer» B. refraction

Discussion

20.	The least distance of distinct vision for human eye is
A.	25 cm
B.	5 cm
C.	75 cm
D.	100 cm
Answer» B. 5 cm

Discussion

21.	Red light is used as danger signal because it
A.	is scattered least
B.	is comfortable for eyes
C.	produces least chemical reactions
D.	absorbs least in air
Answer» B. is comfortable for eyes

Discussion

22.	Laser is a device for producing
A.	spontaneous radiation
B.	dispersed radiation
C.	scattered radiation
D.	stimulated radiation
Answer» E.

Discussion

23.	MRI stands for?
A.	Magnetic Record of Intestines
B.	Magnetic Recording of Investigations
C.	Magnetic Resonance Imaging
D.	Magnetic Resonance in Intestines
Answer» D. Magnetic Resonance in Intestines

Discussion

24.	Wilhelm Rontgen invented
A.	radio
B.	X-ray machine
C.	electric bulb
D.	electric motor
Answer» C. electric bulb

Discussion

25.	The colour of the star is an indication of its
A.	distance from earth
B.	temperature
C.	luminosity
D.	distance from the sun
Answer» C. luminosity

Discussion

26.	The mirror used by a dentist to examine the teeth of patients is
A.	Concave
B.	Convex
C.	Plane
D.	Cylindrical
Answer» B. Convex

Discussion

27.	Which zone of a candle flame is the hottest?
A.	Dark innermost zone
B.	Outermost zone
C.	Middle luminous zone
D.	Central zone
Answer» D. Central zone

Discussion

28.	White light is made up of seven colours. What is the method of separating the colours ?
A.	By passing it through a prism
B.	By filteration
C.	Can't be separated
D.	Both (a) and (b)
Answer» B. By filteration

Discussion

29.	Retina of the eye is comparable to which of the following parts of a traditional camera ?
A.	Film
B.	Lens
C.	Shutter
D.	Cover
Answer» B. Lens

Discussion

30.	Which mirror is used as a rear view mirror in the vehicles ?
A.	plane
B.	Convex
C.	Concave
D.	Plano concave
Answer» C. Concave

Discussion

31.	The reason of mirage is
A.	interference of light
B.	diffraction of light
C.	polarisation of light
D.	total internal reflection of light
Answer» E.

Discussion

32.	The colour of light is determined by its
A.	amplitude
B.	wavelength
C.	intensity
D.	velocity
Answer» C. intensity

Discussion

33.	Two plane mirrors are inclined at an angle of to one another. A ray of light incident on the first mirror and parallel to the second mirror is reflected from the second mirror parallel to the first mirror. What is the value of ?
A.	0
B.	45
C.	60
D.	90
Answer» D. 90

Discussion

34.	Total internal reflection of light is possible when light enters from
A.	Air to glass
B.	Vacuum to air
C.	Air to water
D.	Water to air
Answer» E.

Discussion

35.	An object is placed between two parallel mirrors. The number of images formed is
A.	4
B.	6
C.	8
D.	Infinite
Answer» E.

Discussion

36.	The angle of elevation of a cloud is 30 . A thunder is heard 4 seconds after the lightening is observed. What is the vertical height of the cloud (speed of sound is 300 m/s).
A.	330 m
B.	660 m
C.	660 3 m
D.	1320 m
Answer» C. 660 3 m

Discussion

37.	Assertion (A): In the visible spectrum of light, red light is more energetic than green light. Reason (R) : The wavelength of red light is more than that of green light. Codes
A.	A and R are individually true and R is the correct explanation of A
B.	A and R are individually true but R is but the correct explanation of A
C.	A is true, but is false
D.	A is false, but is true
Answer» E.

Discussion

38.	Which one of the following statements is correct ? In an astronomical telescope of refracting type
A.	The objective and the eyepiece have the same focal length
B.	The focal length of the objective is less than that of the eyepiece
C.	The focal length of the objective is more than that of the eyepiece
D.	The aperture of the eyepiece is more than that of the objective
Answer» D. The aperture of the eyepiece is more than that of the objective

Discussion

39.	A person standing in front of a mirror finds his image thinner but with normal height. The mirror in question is
A.	Concave and spherical
B.	Convex and spherical
C.	Convex and cylindrical with axis vertical
D.	Convex and cylindrical with axis horizontal
Answer» E.

Discussion

40.	Consider the following statements 1. Compound microscope has an objective lens with a very short focal length 2. Simple microscope consists of a strong converging lens system 3. Television camera converts the optical images into electrical video signals 4. Hypermetropia is corrected by using a diverging lens. Which of theses statement is / are correct ? Codes
A.	4 only
B.	2 and 3
C.	1, 2 and 3
D.	3. and 4
Answer» D. 3. and 4

Discussion

41.	Consider the following statements 1. The focal length of the objective of a microscope is less than the focal length of the eyepiece 2. The minimum distance between an object and its real image formed by a convex lens of focal length f is equal to 4f. Which of the statements given above is / are correct ?
A.	1 only
B.	2 only
C.	Both 1 and 2
D.	Neither 1 nor 2
Answer» D. Neither 1 nor 2

Discussion

42.	Consider the following statements 1. Light waves can travel in vacuum 2. Light waves can be refracted 3. Light waves are electro magnetic Which of the statements given above are correct?
A.	1, 2 and 3
B.	2 and 3 only
C.	1 and 3 only
D.	1 and 2 only
Answer» B. 2 and 3 only

Discussion

43.	Assertion (A) : In a motion picture usually 24 frames are projected every second over the whole length of the film Reason (R) : Am image formed on the retina of eye persists for about 0./s after the removal of stimulus. Codes:
A.	Both A and R are and R is the correct explanation of A
B.	Both A and R are true but R is not the correct explanation of A
C.	A is true but R is false
D.	A is false but R is true
Answer» D. A is false but R is true

Discussion

44.	Glass has refractive index 3 / 2 and water has refractive index 4 / 3. If the speed of light in glass is 2.00 X 10⁸ m/s, the speed of light in water in m/s is
A.	1.5 X 10
B.	1.78 X 10
C.	2.25 X 10
D.	2.67 X 10
Answer» D. 2.67 X 10

Discussion

45.	Consider the following natural phenomena 1. Terrestrial heating 2. Reflection of light 3. Refraction of light 4. Diffraction of light Due to which of these phenomena is mirage formed?
A.	1 and 2
B.	2, 3 and 4
C.	1 and 3
D.	4 only
Answer» D. 4 only

Discussion

46.	Consider the following statements 1. If magenta and yellow coloured circles intersect, the intersected area will have red colour 2. If cyan and magenta coloured circles intersect, the intersected area will have blue colour Which of the statements given above is / are correct ?
A.	1 only
B.	2 only
C.	Both 1 and 2
D.	Neither 1 nor 2
Answer» D. Neither 1 nor 2

Discussion

47.	Assertion (A): Small glass beads fixed on traffic signal glow brightly when light falls upon them. Reason (R) : Light is totally reflected when the angle of incidence exceeds a certain critical value and light travelling in a denser medium is reflected from a rarer medium. Codes:
A.	Both A and R are true and R is the correct explanation of A
B.	Both A and R are but R is not a correct explanation of A
C.	A is true but R is false
D.	A is false but R is true
Answer» B. Both A and R are but R is not a correct explanation of A

Discussion

48.	White light
A.	By passing it through a prism
B.	By filteration
C.	Can't be separated
D.	Both (a) and (b)
Answer» B. By filteration

Discussion

49.	Which one among the following is the correct order of
A.	CFL tube < Fluorescent tube < Incandescent bulb < Light emitting diode
B.	Light emitting diode < CFL tube < Fluorescent tube < Incandescent bulb
C.	CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb
D.	Incandescent bulb < Light emitting diode < Fluorescent tube < CFL tube
Answer» C. CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb

Discussion

50.	Soap bubble
A.	disperion
B.	reflection
C.	interference
D.	Any one of these
Answer» D. Any one of these

Discussion

Explore topic-wise MCQs in Physics.

A Swimming pool looks shallower than it really is, when see by a person standing outside near it, because of the phenomenon of

A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.

Which one of the following is correct? Lightning is formed, when

Which one among the following is the correct order of power consumption for light of equal intensity ?

Soap bubble looks coloured due to

Rainbow is formed due to

A student finds the writing on the black board as blurred and unclear when sitting on the last desk in a classroom. However, he sees it clearly when sitting on the front desk. Student suffers from a vision defect known as

When the distance between the object and the plane mirror increases

Butter paper is an example of ...........object.

The sun is seen before the actual sun rise because of .........

The spread in colors in a rainbow on sky is primarily due to

A myopic eye can be corrected by using a

When light passes from one medium to another medium, which one of the following does not change?

The apparatus used to measure the intensity of light is known as

Night vision cameras do not use

Wavelength range of visible light is

The image of the object that we see forms on the retina of our eyes is

Sodium vapor lamp is usually used in street light, because

Optical fibre works on the principle of

The least distance of distinct vision for human eye is

Red light is used as danger signal because it

Laser is a device for producing

MRI stands for?

Wilhelm Rontgen invented

The colour of the star is an indication of its

The mirror used by a dentist to examine the teeth of patients is

Which zone of a candle flame is the hottest?

White light is made up of seven colours. What is the method of separating the colours ?

Retina of the eye is comparable to which of the following parts of a traditional camera ?

Which mirror is used as a rear view mirror in the vehicles ?

The reason of mirage is

The colour of light is determined by its

Two plane mirrors are inclined at an angle of to one another. A ray of light incident on the first mirror and parallel to the second mirror is reflected from the second mirror parallel to the first mirror.What is the value of ?

Total internal reflection of light is possible when light enters from

An object is placed between two parallel mirrors. The number of images formed is

The angle of elevation of a cloud is 30 . A thunder is heard 4 seconds after the lightening is observed. What is the vertical height of the cloud (speed of sound is 300 m/s).

Assertion (A): In the visible spectrum of light, red light is more energetic than green light.Reason (R) : The wavelength of red light is more than that of green light.Codes

Which one of the following statements is correct ?In an astronomical telescope of refracting type

A person standing in front of a mirror finds his image thinner but with normal height.The mirror in question is

Consider the following statements1. Light waves can travel in vacuum2. Light waves can be refracted3. Light waves are electro magneticWhich of the statements given above are correct?

Assertion (A) : In a motion picture usually 24 frames are projected every second over the whole length of the filmReason (R) : Am image formed on the retina of eye persists for about 0./s after the removal of stimulus.Codes:

Glass has refractive index 3 / 2 and water has refractive index 4 / 3. If the speed of light in glass is 2.00 X 108 m/s, the speed of light in water in m/s is

Consider the following natural phenomena1. Terrestrial heating2. Reflection of light3. Refraction of light4. Diffraction of lightDue to which of these phenomena is mirage formed?

Consider the following statements1. If magenta and yellow coloured circles intersect, the intersected area will have red colour2. If cyan and magenta coloured circles intersect, the intersected area will have blue colourWhich of the statements given above is / are correct ?

Assertion (A): Small glass beads fixed on traffic signal glow brightly when light falls upon them.Reason (R) : Light is totally reflected when the angle of incidence exceeds a certain critical value and light travelling in a denser medium is reflected from a rarer medium.Codes:

White light

Which one among the following is the correct order of

Soap bubble

Two plane mirrors are inclined at an angle of to one another. A ray of light incident on the first mirror and parallel to the second mirror is reflected from the second mirror parallel to the first mirror.
What is the value of ?

Assertion (A): In the visible spectrum of light, red light is more energetic than green light.
Reason (R) : The wavelength of red light is more than that of green light.
Codes

Which one of the following statements is correct ?
In an astronomical telescope of refracting type

A person standing in front of a mirror finds his image thinner but with normal height.
The mirror in question is

Consider the following statements
1. Light waves can travel in vacuum
2. Light waves can be refracted
3. Light waves are electro magnetic
Which of the statements given above are correct?

Assertion (A) : In a motion picture usually 24 frames are projected every second over the whole length of the film
Reason (R) : Am image formed on the retina of eye persists for about 0./s after the removal of stimulus.
Codes:

Glass has refractive index 3 / 2 and water has refractive index 4 / 3. If the speed of light in glass is 2.00 X 10⁸ m/s, the speed of light in water in m/s is

Consider the following natural phenomena
1. Terrestrial heating
2. Reflection of light
3. Refraction of light
4. Diffraction of light
Due to which of these phenomena is mirage formed?

Consider the following statements
1. If magenta and yellow coloured circles intersect, the intersected area will have red colour
2. If cyan and magenta coloured circles intersect, the intersected area will have blue colour
Which of the statements given above is / are correct ?

Assertion (A): Small glass beads fixed on traffic signal glow brightly when light falls upon them.
Reason (R) : Light is totally reflected when the angle of incidence exceeds a certain critical value and light travelling in a denser medium is reflected from a rarer medium.
Codes: