A lens which converges a beam of parallel rays to a point is called______________?

Related Mcqs:

If an object is placed away from 2f of a converging lens then the image will be_______________?

A. real and erect B. virtual and erect C. real and inverted D. virtual...

Magnifying power of simple microscope______________?

A. increase with increase in focal length B. increase with decrease in focal length C. no effect with decrease or increase with focal length D. list distance of distinct vision...

A convex lens gives a virtual image only when the objects lies_________________?

A. between principal focus and center of curvature B. beyond 2 f C. at the principal focus D. between principal focus and optical center...

The minimum distance between an object and its real image in a convex lens is_____________?

A. 2 f B. 2.5 f C. 3f D. 4f...

A convex lens acts as a diverging lens if the_________________?

A. object is beyond C B. if the object is with in C C. if the object is within f D. both B and C...