MEDIUM
7th CBSE
IMPORTANT
Earn 100

Two different materials-glass and diamond-are used to make convex lenses of the same thickness. We know that diamond can bend light more than glass. Which lens will have a greater focal length?

Important Questions on Light

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 16 - Light>EXERCISES>Q 6
In which mirror are all normals at the surface parallel to each other - plane mirror, concave mirror or convex mirror?
MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 16 - Light>EXERCISES>Q 7
How many images do you think will be formed if an object is kept between two plane mirrors parallel to each other?
MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 16 - Light>EXERCISES>BE A SCIENTIST

The illustration shows an object O in front of a plane mirror.

Question Image

Which one of the light rays shown appears to come from the image of O?

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 16 - Light>EXERCISES>VALUES

Mary saw a few children using a mirror to shine bright sunlight on the eyes of a street dog. They laughed at the discomfort of the dog. Were they doing the right thing? What value were they not showing?