NCERT Solutions for Class 6 Science Chapter 8 Light, Shadows and Reflections

NCERT
SOLUTIONS
CLASS - 6TH

aglase .co

Class : 6th
Subject : Science
Chapter : 11
Chapter Name : Light, Shadows and Re ections

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

Answer.
Opaque objects make shadows.

Page : 113 , Block Name : Exercise

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 uorescent tube, a wall, a sheet of carbon paper,
the ame of a gas burner, a sheet of cardboard, a lighted torch, a sheet of cellophane, a wire mesh,
kerosene stove, sun, re y, 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. When a cylinder is held in sunlight, then a circular shadow or a rectangular shadow can be
obtained depending on its orientation related to the Sun.

When the top of the cylinder faces the Sun, then the shadow formed is circular. On
the other hand, when the side of the cylinder faces the Sun, then the shadow formed
is rectangular.

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

Answer. An image is formed due to re ection of light by a plane mirror. In a completely dark room, there
is no light present in the room. Thus, no re ection of light takes place by the mirror placed in the room.
Hence, no image will get formed by a mirror in a completely dark room.