Light, shadows and reflection Worksheet-5

Light, shadows and reflection Worksheet-5

 

True/False:

  1. The shadow becomes smaller when the object is moved closer to the light source.
  2. Shadow shows the shape or outline of the object and all the details.
  3. The human eye acts very much like a pin-hole camera.
  4. When Light falls on the hole, and a direct image is formed on the side opposite to the hole.
  5. The shadow is always colourless.
  6. Highly polished surfaces have very small bumps.
  7. By diffused reflection, we can see most things around us.
  8. A rough surface reflects a parallel beam of light incident upon it in one direction.
  9. Avery interesting phenomenon occurs when an object forms an image by diffusion of light.
  10. Water can also act as a reflecting surface.

 

Answer:

  1. False

Exp: The shadow becomes bigger when the object is moved closer to the light source.

  1. False

Exp:  Shadow shows the shape or outline of the object and not the details.

  1. True
  2. False

Exp: When light falls on the hole, and an inverted image is formed on the side opposite to the hole.

  1. False

Exp:   The colour of the shadow is always black.

  1. True
  2. True
  3. False

Exp:   A rough surface reflects a parallel beam of light incident upon it in all directions.

  1. False

Exp:    Avery interesting phenomenon occurs when an object forms an image by reflection.

  1. True