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General Knowledge - Physics

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Exercise

  • Section 1
"Everything should be made as simple as possible, but not simpler."
- Albert Einstein
7. 

Light year is a unit of

A. timeB. distance
C. lightD. intensity of light

8. 

Mirage is due to

A. unequal heating of different parts of the atmosphere
B. magnetic disturbances in the atmosphere
C. depletion of ozone layer in the atmosphere
D. equal heating of different parts of the atmosphere

9. 

Light from the Sun reaches us in nearly

A. 2 minutes
B. 4 minutes
C. 8 minutes
D. 16 minutes

10. 

Stars appears to move from east to west because

A. all stars move from east to west
B. the earth rotates from west to east
C. the earth rotates from east to west
D. the background of the stars moves from west to east

11. 

Pa(Pascal) is the unit for

A. thrustB. pressure
C. frequencyD. conductivity

12. 

Planets do not twinkle because

A. they emit light of a constant intensity
B. their distance from the earth does not change with time
C. they are very far away from the earth resulting in decrease in intensity of light
D. they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable



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