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School Physics Quiz : Light


Answer the following questions based on light.

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Multiple choice

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1.

A lunar eclipse occurs when the earth comes between the sun and the moon.

  True

  False

 

2.

A _______ beam is one whose rays remain the same distance apart.

  parallel

  divergent

  convergent

  Half-n-half Clue
 

3.

The solar eclipse occurs more frequently than the lunar eclipse.

  True

  False

 

4.

_______ is an instrument used to compare the luminous intensities of two sources of light.

  Photometer

  Camera

  Electroscope

  Half-n-half Clue
 

5.

Illuminance of a surface is proportional to the power of the light source and inversely proportional to the square of the _______.

  area

  distance

  luminous intensity

  Half-n-half Clue
 

6.

If the power of a light source is measured in candelas and distance in meters, then the illuminance of the surface is in

  Lux

  Watt

  Joule

  Half-n-half Clue
 

7.

Bodies that radiate light are called

  luminous

  non-luminous

  opaque

  Half-n-half Clue
 


 
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