NCERT Solutions for Class 6th Science
Chapter 11. LIGHT, SHADOWS AND REFLECTIONS
Exercise (NCERT Text Book)
1. 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,b 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.
2. 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?
3. 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?