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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
Red
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
Which of the following figures correctly represents the passage of white light through prism?
a
b and c
c
d
- 4. Multiple Choice
Which of the following graph represents the correct variation of angle of incidence (i) and angle of deviation (δ)?
a
b
c
d
- 5. Multiple Choice
In which of the following cases will no dispersion take place when sunlight passes through it?
a
b
c
d
- 6. Multiple Choice
A: Astigmatism usually is caused by an irregularly shaped cornea.
B: Rainbow is the natural phenomenon in which dispersion takes place.
Both 'A' and 'B' are true statements
Both 'A' and 'B' are false statements.
‘A' is true while 'B' is false.
‘A' is false while 'B' is true
- 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
At noon, the Sun appears white as
blue colour is scattered the most
red colour is scattered the most
light is least scattered
all the colours of the white light are scattered away
- 9. 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
- 10. Multiple Choice
When white light enters a glass prism from air, the angle of deviation is least for
blue light
yellow light
violet light
red light
- 11. 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
- 12. Multiple Choice
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
Isaac Newton
Einstein
Kepler
Hans Christian Oersted
- 13. Fill in the Blank
……….. of light causes the blue colour of sky and reddening of the Sun at sunrise and sunset.
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