Question

The image produced by a lens is virtual, erect and smaller than the object in size. Then the lens must be ______.

विकल्प

• convex

• concave

• cylindrical

• any one of the above

Answer 1

The image produced by a lens is virtual, erect and smaller than the object in size. Then the lens must be concave.

Explanation:

A concave lens always forms a virtual, erect, and diminished image of an object for all positions. A convex lens forms an enlarged virtual image when the object is within the focal length.