What is the reason behind the extraordinary shining of the diamond cuts in a proper way?

Which of the following is the reason behind the faster travel of information in a fibre optic cable than copper wire ?

In the dispersion of white light by a common glass prism, which one among the following is correct?

Light waves are incident on an air-glass boundary. Some of the light waves are reflected and some are refracted in the glass. Which one of the following properties is the same for the incident wave a…

A person standing in front of a mirror finds his image larger than himself. This implies that the mirror is

Retina of the eye is comparable to which of the following parts of a traditional camera?