Which lens is used to correct hyperopia (farsightedness)?

Which lens is used to correct myopia (nearsightedness)?

The splitting of white light into its component colors is called:

The image formed by a plane mirror is:

The color with the longest wavelength in the visible spectrum is:

The bending of light as it passes from one medium to another is called:

The unit used to measure the power of a lens is:

A concave lens is also known as a:

Total internal reflection occurs when light travels from a:

A convex lens is also known as a:

The working principle of an optical fiber is based on: