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

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

When the distance between the

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

total internal reflection of sunlight

Magnetic Resonance in Intestines

Magnetic Recording of Investigations

Magnetic Resonance in Intestines

produces least chemical reactions

Total internal reflection can occur when light tends to pass from

One medium to another of equal refractive index

A concave mirror forms the image of an object on a screen. If the lower half of the mirror is covered with an opaque card, the effect would be

To make the lower half of the image disappear

To make the upper half of the image disappear

A convex lens made of a material of refractive index 1.5 and having a focal length of 10 cm is immersed in a liquid of refractive index 3.0 The lens will behave as a

Diverging lens of focal length 30 cm

Converging lens of focal length 10 cm

Diverging lens of focal length 10 cm

Diverging lens of focal length 30 cm

A ray of light travelling inside a rectangular glass block of refractive index 2 is incident on the glass air surface at an angle of incidence of 45 . The refractive index of air is 1. The ray will

Emerge into air without any deviation

Emerged in to air with an angle of refraction equal to 90

A diver in a lake wants to signal distress to a person sitting on the edge of the lake flashing his water proof torch. He should direct the beam

At an angle to the vertical which is slightly more than critical angle

At an angle to the vertical which is slightly less than critical angle

At an angle to the vertical which is slightly more than critical angle

Two plane mirrors are placed perpendicular to each other. A ray strikes one mirror and after reflection falls on the second mirror. The ray after reflection from the second mirror will be

Perpendicular to the original ray

When a ray or light enters a glass slab from air

Neither its wavelength nor its frequency changes

In the case of hypermetropia

The image of a distinct object is formed in front of the retina

The image of a near object is formed behind the retina

The image of a distinct object is formed in front of the retina

A concave lens should be used for correction

A cylindrical lens should be used for correction

Two sources of wave are called coherent if

Both produce waves having the same velocity

Both have the same amplitude of vibration

Both produce waves of the same wavelength

Both produce waves of the same wavelength having a constant phase difference

Both produce waves having the same velocity

When a ray of light is refracted by a prism such that the angle of deviation is minimum then

The angle of emergence is greater than the angle of incidence

The angle of emergence is equal to the angle of incidence

The angle of emergence is greater than the angle of incidence

The angle of emergence is smaller than the angle of incidence

The sum of the angle of incidence and the angle of emergence is equal to 90

Check the wrong statement (s)

A convex mirror can give a diminished virtual image

A concave mirror can give a virtual image

A concave mirror can give a diminished virtual image

A convex mirror can give a diminished virtual image

216 + Mcqs in Light in Physics Page 2 McqOptions

51.	Rainbow
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

52.	A student finds the writing on the black board as
A.	hypermetropia
B.	myopia
C.	presbyopia
D.	astigmatism
Answer» C. presbyopia

Discussion

53.	Night vision cameras
A.	amplified light
B.	infrared sensors
C.	heat radiation from objects
D.	X - ray radiation from objects
Answer» E.

Discussion

54.	Wavelength range
A.	200 - 900 nm
B.	600 - 780 nm
C.	300 - 800 nm
D.	390 - 780 nm
Answer» E.

Discussion

55.	Sodium vapor lamp
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

56.	Laser
A.	spontaneous radiation
B.	dispersed radiation
C.	scattered radiation
D.	stimulated radiation
Answer» E.

Discussion

57.	A Swimming pool
A.	refraction of light
B.	reflection of light
C.	dispersion of light
D.	None of these
Answer» B. reflection of light

Discussion

58.	A child is standing in front of a
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

59.	When the distance between the
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

60.	Butter paper
A.	a transparent
B.	a translucent
C.	an opaque
D.	a luminous
Answer» C. an opaque

Discussion

61.	The spread
A.	dispersion of sunlight
B.	reflection of sunlight
C.	refraction of sunlight
D.	total internal reflection of sunlight
Answer» B. reflection of sunlight

Discussion

62.	Which zone of a
A.	Dark innermost zone
B.	Outermost zone
C.	Middle luminous zone
D.	Central zone
Answer» D. Central zone

Discussion

63.	MRI
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

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

Discussion

65.	Optical fibre
A.	total internal reflection
B.	refraction
C.	scattering
D.	interference
Answer» B. refraction

Discussion

66.	Red light
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

67.	Retina
A.	Film
B.	Lens
C.	Shutter
D.	Cover
Answer» B. Lens

Discussion

68.	A double convex glass lens of focal length f and having a circular aperture is cut into two halves, each having a semicircular aperture. The focal length of each half is
A.	f
B.	2f
C.	f / 2
D.	Infinite
Answer» B. 2f

Discussion

69.	In a simple microscope, the lens is held at a distance d from the eye and the image is formed at the least distance (D) of distinct vision from the eye. What is the magnifying power of the microscope?
A.	D / f
B.	1 + (D / f)
C.	1 + {(D - d) / f }
D.	1 + {(D + d) / f }
Answer» D. 1 + {(D + d) / f }

Discussion

70.	Which of the following cannot be polarized?
A.	Radio wave
B.	X-ray
C.	Sound wave in air
D.	Infrared radiation
Answer» D. Infrared radiation

Discussion

71.	Which mirror is to be used to obtain a parallel beam of light from a small lamp ?
A.	Plane mirror
B.	Convex mirror
C.	Concave mirror
D.	Any one of these
Answer» D. Any one of these

Discussion

72.	The focal length of the lens in a photographic camera is 5 cm. What is the power of the lens?
A.	+ 5 D
B.	+ 10 D
C.	+ 15 D
D.	+ 20 D
Answer» E.

Discussion

73.	Total internal reflection can occur when light tends to pass from
A.	A denser to a rarer medium
B.	A rarer to a denser medium
C.	One medium to another of equal refractive index
D.	None of the above
Answer» B. A rarer to a denser medium

Discussion

74.	A concave mirror forms the image of an object on a screen. If the lower half of the mirror is covered with an opaque card, the effect would be
A.	To make the image less bright
B.	To make the lower half of the image disappear
C.	To make the upper half of the image disappear
D.	To make the image blurred
Answer» B. To make the lower half of the image disappear

Discussion

75.	A convex lens made of a material of refractive index 1.5 and having a focal length of 10 cm is immersed in a liquid of refractive index 3.0 The lens will behave as a
A.	Converging lens of focal length 10 cm
B.	Diverging lens of focal length 10 cm
C.	Diverging lens of focal length 30 cm
D.	None of the above
Answer» C. Diverging lens of focal length 30 cm

Discussion

76.	Which of the following produce a virtual image smaller in size than the object?
A.	Concave lens
B.	Convex mirror
C.	Concave mirror
D.	Both (a) and (b)
Answer» E.

Discussion

77.	A ray of light travelling inside a rectangular glass block of refractive index 2 is incident on the glass air surface at an angle of incidence of 45 . The refractive index of air is 1. The ray will
A.	Emerge into air without any deviation
B.	Be reflected back in to glass
C.	Be absorbed
D.	Emerged in to air with an angle of refraction equal to 90
Answer» E.

Discussion

78.	A diver in a lake wants to signal distress to a person sitting on the edge of the lake flashing his water proof torch. He should direct the beam
A.	Vertically upwards
B.	Horizontally
C.	At an angle to the vertical which is slightly less than critical angle
D.	At an angle to the vertical which is slightly more than critical angle
Answer» D. At an angle to the vertical which is slightly more than critical angle

Discussion

79.	Two plane mirrors are placed perpendicular to each other. A ray strikes one mirror and after reflection falls on the second mirror. The ray after reflection from the second mirror will be
A.	Perpendicular to the original ray
B.	Parallel to the original ray
C.	At 45 to the original ray
D.	None of the above
Answer» C. At 45 to the original ray

Discussion

80.	When a ray or light enters a glass slab from air
A.	Its wavelength decreases
B.	Its wavelength increases
C.	Its frequency increases
D.	Neither its wavelength nor its frequency changes
Answer» B. Its wavelength increases

Discussion

81.	Two plane mirrors are inclined at a certain angle. A ray of light coming parallel to one of the mirrors is rendered parallel to the second mirror after two reflections The inclination between the mirror is
A.	60
B.	90
C.	45
D.	30
Answer» B. 90

Discussion

82.	A person can not see clearly objects at a distance less than 100 cm. The power of the spectacles required to see clearly objects at 25 cm is
A.	+ 1 D
B.	+ 3 D
C.	+ 4 D
D.	+ 2 D
Answer» C. + 4 D

Discussion

83.	In the case of hypermetropia
A.	The image of a near object is formed behind the retina
B.	The image of a distinct object is formed in front of the retina
C.	A concave lens should be used for correction
D.	A cylindrical lens should be used for correction
Answer» B. The image of a distinct object is formed in front of the retina

Discussion

84.	A monochromatic beam of light passes from a denser to a rarer medium as a result its
A.	Velocity increases
B.	Velocity decreases
C.	Frequency decreases
D.	Wavelength decreases
Answer» B. Velocity decreases

Discussion

85.	The image of an object formed by device is always virtual and small. The device may be
A.	Convex lens
B.	Concave mirror
C.	Concave lens
D.	None of these
Answer» D. None of these

Discussion

86.	Two sources of wave are called coherent if
A.	Both have the same amplitude of vibration
B.	Both produce waves of the same wavelength
C.	Both produce waves of the same wavelength having a constant phase difference
D.	Both produce waves having the same velocity
Answer» D. Both produce waves having the same velocity

Discussion

87.	Line spectrum is given by
A.	Sun
B.	Mercury vapour lamp
C.	Candle
D.	Electric bulb
Answer» C. Candle

Discussion

88.	When a ray of light is refracted by a prism such that the angle of deviation is minimum then
A.	The angle of emergence is equal to the angle of incidence
B.	The angle of emergence is greater than the angle of incidence
C.	The angle of emergence is smaller than the angle of incidence
D.	The sum of the angle of incidence and the angle of emergence is equal to 90
Answer» B. The angle of emergence is greater than the angle of incidence

Discussion

89.	Blue colour of the sky is consequence of
A.	Reflection
B.	Refraction
C.	Scattering
D.	Dispersion
Answer» D. Dispersion

Discussion

90.	Colours of thin films are due to
A.	Dispersion of light
B.	Interference of light
C.	Absorption of light
D.	Scattering of light
Answer» C. Absorption of light

Discussion

91.	A far-sighted person has a near point at 100 cm. What must be the power of the correcting lens /
A.	-0.8 D
B.	-3.0 D
C.	+ 0.8 D
D.	+ 3.0 D
Answer» E.

Discussion

92.	Chromatic aberration in a lens is caused by
A.	Reflection
B.	Interference
C.	Diffraction
D.	Dispersion
Answer» E.

Discussion

93.	Focal length of a convex lens is maximum for
A.	Blue light
B.	Yellow light
C.	Green light
D.	Red light
Answer» E.

Discussion

94.	How many image can a man see if he stands between two plane mirrors inclined at an angle of 60 ?
A.	3
B.	4
C.	5
D.	6
Answer» D. 6

Discussion

95.	Spectrum of the sun consists of
A.	Bright lines
B.	Dark lines
C.	Bright bands
D.	Dark bands
Answer» C. Bright bands

Discussion

96.	when a coin placed in a bowl of water is seen from above, it appears
A.	Raised from its position
B.	Below its position
C.	At the same position
D.	None of these
Answer» B. Below its position

Discussion

97.	Check the wrong statement (s)
A.	A concave mirror can give a virtual image
B.	A concave mirror can give a diminished virtual image
C.	A convex mirror can give a diminished virtual image
D.	All of the above
Answer» C. A convex mirror can give a diminished virtual image

Discussion

98.	When a ray of light enters a water filled glass tank from a glass face making a non zero angle to the normal, the emergent ray from the opposite face will follow a path which is
A.	Same
B.	Deflected to the right
C.	Deflected to the left
D.	Parallel but not same
Answer» E.

Discussion

99.	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.
A.	0
B.	45
C.	60
D.	90
Answer» D. 90

Discussion

100.	If the refractive angle of a prism is 60 and the minimum deviation is 30 , then the angle of incidence is
A.	30
B.	60
C.	45
D.	90
Answer» D. 90

Discussion

Explore topic-wise MCQs in Physics.

Rainbow

A student finds the writing on the black board as

Night vision cameras

Wavelength range

Sodium vapor lamp

Laser

A Swimming pool

A child is standing in front of a

When the distance between the

Butter paper

The spread

Which zone of a

MRI

Wilhelm Rontgen

Optical fibre

Red light

Retina

A double convex glass lens of focal length f and having a circular aperture is cut into two halves, each having a semicircular aperture. The focal length of each half is

In a simple microscope, the lens is held at a distance d from the eye and the image is formed at the least distance (D) of distinct vision from the eye. What is the magnifying power of the microscope?

Which of the following cannot be polarized?

Which mirror is to be used to obtain a parallel beam of light from a small lamp ?

The focal length of the lens in a photographic camera is 5 cm. What is the power of the lens?

Total internal reflection can occur when light tends to pass from

A concave mirror forms the image of an object on a screen. If the lower half of the mirror is covered with an opaque card, the effect would be

A convex lens made of a material of refractive index 1.5 and having a focal length of 10 cm is immersed in a liquid of refractive index 3.0 The lens will behave as a

Which of the following produce a virtual image smaller in size than the object?

A ray of light travelling inside a rectangular glass block of refractive index 2 is incident on the glass air surface at an angle of incidence of 45 . The refractive index of air is 1. The ray will

A diver in a lake wants to signal distress to a person sitting on the edge of the lake flashing his water proof torch. He should direct the beam

Two plane mirrors are placed perpendicular to each other. A ray strikes one mirror and after reflection falls on the second mirror. The ray after reflection from the second mirror will be

When a ray or light enters a glass slab from air

Two plane mirrors are inclined at a certain angle. A ray of light coming parallel to one of the mirrors is rendered parallel to the second mirror after two reflections The inclination between the mirror is

A person can not see clearly objects at a distance less than 100 cm. The power of the spectacles required to see clearly objects at 25 cm is

In the case of hypermetropia

A monochromatic beam of light passes from a denser to a rarer medium as a result its

The image of an object formed by device is always virtual and small. The device may be

Two sources of wave are called coherent if

Line spectrum is given by

When a ray of light is refracted by a prism such that the angle of deviation is minimum then

Blue colour of the sky is consequence of

Colours of thin films are due to

A far-sighted person has a near point at 100 cm. What must be the power of the correcting lens /

Chromatic aberration in a lens is caused by

Focal length of a convex lens is maximum for

How many image can a man see if he stands between two plane mirrors inclined at an angle of 60 ?

Spectrum of the sun consists of

when a coin placed in a bowl of water is seen from above, it appears

Check the wrong statement (s)

When a ray of light enters a water filled glass tank from a glass face making a non zero angle to the normal, the emergent ray from the opposite face will follow a path which is

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.

If the refractive angle of a prism is 60 and the minimum deviation is 30 , then the angle of incidence is