MEDIUM
10th ICSE
IMPORTANT
Earn 100

Complete the following table.
Type of lens Position of object Nature of image Size of image
convex Between optic centre and focus    
convex At focus    
concave At infinity    
concave At any distance    

Important Questions on Refraction Through a Lens

MEDIUM
10th ICSE
IMPORTANT
State the changes in the position, size and nature of the image of an object when brought from infinity up to a convex lens. Illustrate your answer by drawing ray diagrams.
HARD
10th ICSE
IMPORTANT

State the changes in the position, size and nature of the image of an object when brought from infinity up to a concave lens. Illustrate your answer by drawing diagrams.

EASY
10th ICSE
IMPORTANT
When an object is placed at a distance of more than 40 cm from a convex lens of focal length 20 cm. What are the properties of image formed ?
EASY
10th ICSE
IMPORTANT
When an object is placed at a distance 2F from a convex lens of focal length F. What is the size of image formed ?
EASY
10th ICSE
IMPORTANT

When an object is placed at a distance 5 cm from a convex lens of focal length 10 cm. What is the nature of the image?

Question Image

EASY
10th ICSE
IMPORTANT
A convex lens has a divergent action and a concave lens has a convergent action.
EASY
10th ICSE
IMPORTANT
A concave lens, if kept at a proper distance from an object, can form its real image.
EASY
10th ICSE
IMPORTANT
A ray of light incident parallel to the principal axis of a lens, passes undeviated after refraction.