EASY
10th CBSE
IMPORTANT
Earn 100
What type of lens is shown in the diagram on the right? What will happen to the parallel rays of light? Show by completing the ray diagram.
Important Questions on Refraction of Light
EASY
10th CBSE
IMPORTANT
Your eye contains a convex lens. Why is it unwise to look at the sun?
EASY
10th CBSE
IMPORTANT
Where must the object be placed for the image formed by a converging lens to be real, inverted and smaller than the object?
EASY
10th CBSE
IMPORTANT
Where must the object be placed for the image formed by a converging lens to be real, inverted and same size as the object?
EASY
10th CBSE
IMPORTANT
Where must the object be placed for the image formed by a converging lens to be real, inverted and larger than the object?
EASY
10th CBSE
IMPORTANT
Where must the object be placed for the image formed by a converging lens to be virtual, upright and larger than the object?
EASY
10th CBSE
IMPORTANT
Draw a diagram to show how a converging lens held close to the eye acts as a magnifying glass. Why is it usual to choose a lens of short focal length for this purpose rather than one of long focal length?
EASY
10th CBSE
IMPORTANT
How could you find the focal length of a convex lens rapidly but approximately?
EASY
10th CBSE
IMPORTANT
With the help of a labelled diagram, explain how a convex lens converges a beam of parallel light rays. Mark the principal axis, optical centre, principal focus and focal length of the convex lens on the diagram.
