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School Physics Quiz : Light


Answer the following questions based on light.

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Multiple choice

Your Performance  

1.

Light from the sun takes about _______ minutes to reach the earth.

  eight

  four

  six

  Half-n-half Clue
 

2.

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

  parallel

  divergent

  convergent

  Half-n-half Clue
 

3.

The partly lighted area of a shadow on the periphery of the totally shaded portion is called the _______

  umbra

  eclipse

  penumbra

  Half-n-half Clue
 

4.

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

  luminous intensity

  area

  distance

  Half-n-half Clue
 

5.

The solar eclipse occurs more frequently than the lunar eclipse.

  True

  False

 

6.

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

  Joule

  Watt

  Lux

  Half-n-half Clue
 

7.

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

  lunar

  solar

 


 
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