Lens and Terms related to Lens

What is bifocal lens?

Which lens diverges the light rays falling on it?

Which lens is used as a magnifying glass - convex lens or concave lens?

The image formed by a pin hole camera is sharpest when the

The type of lens present in human eye is

Which one of the following materials cannot be used to make a lens?

A convex lens is called _________.

Reciprocal of focal length in meters is known as the ______ of a lens.

1 D is the power of the lens of focal length of ______ cm.

SI unit of the power of a lens is ___________.

Parallel rays of light entering a convex lens always converge at _______.

The part of the lens through which the ray of light passes without suffering deviation is called ________.