NCERT-6 Science Solutions L-11

NCERT-6 Science Solutions

Chapter 11:​​ Light, Shadows and Reflections

NCERT TEXTBOOK EXERCISES-Pages 113-114

Question 1.​​ Rearrange the boxes given below to make a sentence that helps us understand opaque objects.
NCERT Solutions for Class 6 Science Chapter 11 Light, Shadows and Reflections 1
Answer:
NCERT Solutions for Class 6 Science Chapter 11 Light, Shadows and Reflections 2

Question 2.​​ Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous:
Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet of cellophane, a wire mesh, kerosene stove, sun, firefly, moon.

Answer:

  • Transparent objects: Air, water, a sheet of plane glass.

  • Translucent objects: A sheet of polythene, smoke, fog, a sheet of cellophane, a wire mesh.

  • Opaque objects: A piece of rock, a sheet of aluminium, a mirror, a wooden board, a CD, an umbrella, a wall, a sheet of carbon paper, a sheet of cardboard.

  • Luminous objects: A piece of​​ red-hot​​ iron, a lighted fluorescent tube, the flame of a gas burner, a lighted torch, kerosene stove, sun, firefly.

  • Non-luminous objects: Include all

  • transparent objects,

  • translucent objects and

  • opaque objects and moon.

Question 3.​​ Can you think of creating a shape that would give a circular shadow if held in one way and a rectangular shadow if held in another way?
Answer:
Yes, there are many things which give a circular shadow if held in one way and a rectangular shadow if held in another way. For example, a cylinder, a circular disc, etc.

NCERT Solutions for Class 6 Science Chapter 11 Light, Shadows and Reflections 3

Question 4.​​ In a completely dark room, if you hold up a mirror in front of you, you see a reflection of yourself in the mirror?
Answer:
No, we will not see the image because there is no light.

 

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