EASY
6th Foundation
IMPORTANT
Earn 100

Which of the following explains why air is not visible?
(a)It is nearly a perfect transparent substance.
(b)It neither absorbs nor reflects light.
(c)It transmits whole of light.
(d)All of these

50% studentsanswered this correctly

Important Questions on Light, Shadows and Reflections
HARD
6th Foundation
IMPORTANT


MEDIUM
6th Foundation
IMPORTANT

HARD
6th Foundation
IMPORTANT

How will the shadow look like?

EASY
6th Foundation
IMPORTANT


HARD
6th Foundation
IMPORTANT

EASY
6th Foundation
IMPORTANT
Fill in the blanks with most appropriate option.
Although a number of objects, such as kites, birds, aeroplanes move in space, but their shadow is not seen on the earth. This is due to the reason that the __i___, the region of complete __ii___ is not able to reach the earth. The region of partial __iii___, that is the __iv___ reaching the earth is too large and too faint to be visible to us.
(A) | Penumbra | Darkness | Brightness | Umbra |
(B) | Penumbra | Brightness | Darkness | Umbra |
(C) | Umbra | Darkness | Brightness | Penumbra |
(D) | Umbra | Brightness | Darkness | Penumbra |

EASY
6th Foundation
IMPORTANT
Which of the items above will allow you to see around a corner from where you are standing?

EASY
6th Foundation
IMPORTANT
l. Move away from the mirror
II. Move towards the mirror.
III. Use a mirror whose height will allow you to see your full image.
