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- 1. Multiple Choice
When a beam of white light falls on a glass prism, the colour of light which will deviate least is:
Violet
Orange
Green
Blue
- 2. Multiple Choice
The star appear shifted from their actual position due to the phenomenon of:
Diffraction of light
Scattering of light
Refraction of light
Reflection of light
- 3. Multiple Choice
Blue colour of the sky is due to the phenomenon of:
Reflection of light
Refraction of light
Dispersion of light
Scattering of light
- 4. Multiple Choice
The __ colour is at the top and ____ colour is at the bottom of spectrum.
Red, Violet
Red, Blue
Violet, red
None
- 5. Multiple Choice
The angle at which the ray gets deviated is called :
Angle of deviation
Angle of dispersion
Angle emergence
refracted angle
- 6. Multiple Choice
A transparent refracting material which is bounded by two plane refracting surfaces is :
Prism
Convex lens
Glass slab
None
- 7. Multiple Choice
The splitting of white light into different colours on passing through a prism is called
reflection
refraction
dispersion
deviation
- 8. Multiple Choice
Twinkling of stars is due to
reflection of light by clouds
scattering of light by dust particles
dispersion of light by water drops
atmospheric refraction of starlight
- 9. Multiple Choice
Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
Twinkling of stars
Stars seem higher than they actually are
Advanced sunrise and delayed sunset
Rainbow
- 10. Multiple Choice
The air layer of atmosphere whose temperature is less then the hot layer behave as optically
denser medium
rarer medium
inactive medium
either denser or rarer medium
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