EASY
6th Foundation
IMPORTANT
Earn 100

Which of the following explains why air is not visible? 

50% studentsanswered this correctly

Important Questions on Light, Shadows and Reflections

HARD
6th Foundation
IMPORTANT
A girl is 4m away from the plane mirror. If she moves few steps closer to the mirror, what will happen to the size of image in the mirror?
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MEDIUM
6th Foundation
IMPORTANT
A plane mirror reflects a pencil of light to form a real image. Then the pencil of light incident on the mirror is :
HARD
6th Foundation
IMPORTANT
Study the set-up below.
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How will the shadow look like?
EASY
6th Foundation
IMPORTANT
There is no dark shadow formed by the glass when light is shone on it. This is because :
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HARD
6th Foundation
IMPORTANT
Which of the following statements is true?
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.

  (i) (ii) (iii) (iv)
(A) Penumbra Darkness Brightness Umbra
(B) Penumbra Brightness Darkness Umbra
(C) Umbra Darkness Brightness Penumbra
(D) Umbra Brightness Darkness Penumbra

 

EASY
6th Foundation
IMPORTANT

Question Image     

Which of the items above will allow you to see around a corner from where you are standing? 

EASY
6th Foundation
IMPORTANT
You are standing upright in a room in front of a vertical plane mirror. In this mirror, you can see from your position, only the upper two- third part of your body. You wish to see the full image of your body in the mirror. Which combination of the following three courses of action will achieve this? 
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.