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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 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 phenomenon of twinkling of stars is due to:
A Dispersion of light
B Scattering of light
C Atmospheric refraction
D Interference of light
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 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 phenomenon of "twinkling of stars" is caused by:
A Scattering of light
B Refraction of light in Earth's atmosphere
C Reflection from clouds
D Dispersion by water droplets
NDA General Test
The lens used to correct myopia (near-sightedness) is:
A Convex lens
B Concave lens
C Cylindrical lens
D Bifocal lens
NDA General Test
When light travels from air into glass, which of the following changes?
A Frequency only
B Wavelength only
C Speed and wavelength
D Speed and frequency
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

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