NCERT Solutions for Class 6 Science Chapter 11 Light Shadows And Reflections

Q1 ) Rearrange the boxes given below to make a sentence that helps us understand opaque objects.

Answer :

Q2 ) 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, the moon.

Answer :

Q3 ) 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, If we have a right circular cylinder then it would give a circular shadow if held in one way and it give rectangular shadow if held in another way.

Q4 ) In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?

Answer :

No, In completely dark room, if we hold up a mirror in front of us we do not see a reflection of our self because there is no light falling on the mirror which can be reflected to show the image.