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Optics And Light Mock Tests

12 questions available

Optics And Light Mock Test 1

Questions: 12

Sample Questions

NDA General Test
The human eye is able to see objects clearly at different distances due to:
A Reflection of light
B Accommodation power of the lens
C Refraction by cornea
D Dispersion of light
NDA General Test
The Sun appears red during sunrise and sunset because:
A The Sun is naturally cooler at these times
B Scattering of light — blue light is scattered away, red light reaches us
C The atmosphere absorbs red light
D Reflection from clouds
NDA General Test
The Sun appears red during sunrise and sunset because:
A The Sun emits less red light at these times
B Scattering of light by atmospheric particles
C Reflection of the Sun's light by the atmosphere
D Absorption of all colors except red by the ozone layer
NDA General Test
The phenomenon of "mirage" is caused by:
A Total internal reflection
B Scattering of light
C Interference of light
D Polarization of light
NDA General Test
The phenomenon of sunset appearing red is due to:
A Scattering of light
B Reflection of light
C Refraction of light
D Dispersion of light
NDA General Test
The human eye is able to see objects clearly at different distances due to:
A Reflection of light
B Accommodation power of the lens
C Refraction by cornea
D Dispersion of light
NDA General Test
The speed of light in vacuum is approximately:
A 3 × 10⁶ m/s
B 3 × 10⁸ m/s
C 3 × 10¹⁰ m/s
D 3 × 10⁵ m/s
NDA General Test
The lens used to correct myopia (near-sightedness) is:
A Convex lens
B Concave lens
C Cylindrical lens
D Bifocal lens

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