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

  lunar

  solar

 

2.

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

  umbra

  penumbra

  eclipse

  Half-n-half Clue
 

3.

The distance between a light source and a screen is doubled. The illuminance of the screen becomes

  half its original value

  four times its original value

  twice its original value

  one-fourth its original value

  Half-n-half Clue
 

4.

Materials through which light cannot pass are said to be

  transparent

  translucent

  opaque

  Half-n-half Clue
 

5.

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

  True

  False

 

6.

Materials that allow light to pass but through which objects cannot be clearly seen are said to be

  transparent

  opaque

  translucent

  Half-n-half Clue
 

7.

Non-luminous bodies become visible when they _______ light into our eyes.

  reflect

  refract

  radiate

  Half-n-half Clue
 


 
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