EASY
7th CBSE
IMPORTANT
Earn 100

Which type of lens is used to make fire with during day time?

Important Questions on Light

EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 15 - Light>EXERCISES>Q IV
Which type of mirror is used as reflector in a torchlight and why?
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 15 - Light>EXERCISES>Q IV
What is meant by the lateral inversion in a plane mirror?
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 15 - Light>EXERCISES>Q V
Give reasons for the following.
Chillies kept in a cylindrical bottle of vinegar appear to be enlarged.
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 15 - Light>EXERCISES>Q V
Give reasons for the following.
Rainbow is not formed during noon.
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 15 - Light>EXERCISES>Q V
Give reasons for the following:
The image formed in a plane mirror is not a real image.
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 15 - Light>EXERCISES>Q V
Give reasons for the following:
Many colours are seen in the reflected light from a compact disc.
EASY
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 15 - Light>EXERCISES>Q V
Give reasons for the following:
Colours disappear when seven coloured disc is rotated with speed.
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 15 - Light>EXERCISES>Q VI

Match the object under column A with the use under column B:

Column A Column B
1. A plane mirror (i) reflector in torch
2. A convex mirror (ii) a magnifying glass
3. A concave mirror (iii) a looking glass in our homes
4. A convex lens (iv) used in specs to view distant objects clearly
5. A concave lens (v) a rear view mirror