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- 1. Multiple Choice
In the human eye, the image of an object is formed at the......
Iris
Pupils
Retina
Cornea
- 2. Multiple Choice
The phenomenon of......... of light by the colloidal particles gives rise to the Tyndall effect.
Reflection
Refraction
Scattering
Disperston
- 3. Multiple Choice
How many surface does a triangular prisam have ?
6
5
4
3
- 4. Multiple Choice
For persons suffering from near-sightedness the power of the lend used in spectacles is..........
Positive
Zero
Negative
Infinite
- 5. Multiple Choice
For normal vision, the far point is at ............ distance.
25 cm
1 m
1 m
Infinite
- 6. Multiple Choice
What is the time difference between actual sunset and apparent sunset ?
2 seconds
20 seconds
2 minutes
20 minutes
- 7. Multiple Choice
A myopic person has the far point nearer than infinity.
True
False
- 8. Multiple Choice
Far- sightedness can be rectified by using a concave lend of suitable power.
True
False
- 9. Multiple Choice
A hypermetropic person has near point farther away from the normal near point (25 cm)
True
False
- 10. Multiple Choice
Planets twinkle.
True
False
- 11. Fill in the Blank
Light enters our eye through the.......
- 12. Fill in the Blank
At the time of sunrise the sun appears.......... in colour.
- 13. Fill in the Blank
The diameter of the human eyeball is approximately.......... cm
- 14. Fill in the Blank
The lens in human eye is a.........
- 15. Fill in the Blank
The refractive index of glass is maximum for........ light.
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