MCQOPTIONS
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MCQOPTIONS
This section includes 216 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 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 | |
| 52. |
A student finds the writing on the black board as |
| A. | hypermetropia |
| B. | myopia |
| C. | presbyopia |
| D. | astigmatism |
| Answer» C. presbyopia | |
| 53. |
Night vision cameras |
| A. | amplified light |
| B. | infrared sensors |
| C. | heat radiation from objects |
| D. | X - ray radiation from objects |
| Answer» E. | |
| 54. |
Wavelength range |
| A. | 200 - 900 nm |
| B. | 600 - 780 nm |
| C. | 300 - 800 nm |
| D. | 390 - 780 nm |
| Answer» E. | |
| 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 | |
| 56. |
Laser |
| A. | spontaneous radiation |
| B. | dispersed radiation |
| C. | scattered radiation |
| D. | stimulated radiation |
| Answer» E. | |
| 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 | |
| 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 | |
| 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 | |
| 60. |
Butter paper |
| A. | a transparent |
| B. | a translucent |
| C. | an opaque |
| D. | a luminous |
| Answer» C. an opaque | |
| 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 | |
| 62. |
Which zone of a |
| A. | Dark innermost zone |
| B. | Outermost zone |
| C. | Middle luminous zone |
| D. | Central zone |
| Answer» D. Central zone | |
| 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 | |
| 64. |
Wilhelm Rontgen |
| A. | radio |
| B. | X-ray machine |
| C. | electric bulb |
| D. | electric motor |
| Answer» C. electric bulb | |
| 65. |
Optical fibre |
| A. | total internal reflection |
| B. | refraction |
| C. | scattering |
| D. | interference |
| Answer» B. refraction | |
| 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 | |
| 67. |
Retina |
| A. | Film |
| B. | Lens |
| C. | Shutter |
| D. | Cover |
| Answer» B. Lens | |
| 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 | |
| 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 } | |
| 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 | |
| 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 | |
| 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. | |
| 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 | |
| 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 | |
| 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 | |
| 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. | |
| 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. | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 87. |
Line spectrum is given by |
| A. | Sun |
| B. | Mercury vapour lamp |
| C. | Candle |
| D. | Electric bulb |
| Answer» C. Candle | |
| 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 | |
| 89. |
Blue colour of the sky is consequence of |
| A. | Reflection |
| B. | Refraction |
| C. | Scattering |
| D. | Dispersion |
| Answer» D. Dispersion | |
| 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 | |
| 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. | |
| 92. |
Chromatic aberration in a lens is caused by |
| A. | Reflection |
| B. | Interference |
| C. | Diffraction |
| D. | Dispersion |
| Answer» E. | |
| 93. |
Focal length of a convex lens is maximum for |
| A. | Blue light |
| B. | Yellow light |
| C. | Green light |
| D. | Red light |
| Answer» E. | |
| 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 | |
| 95. |
Spectrum of the sun consists of |
| A. | Bright lines |
| B. | Dark lines |
| C. | Bright bands |
| D. | Dark bands |
| Answer» C. Bright bands | |
| 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 | |
| 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 | |
| 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. | |
| 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 | |
| 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 | |