A device which is used to limit the current in an electrical circuit is called a

Eclipses occur due to which optical phenomena ?

Which of the following radiations has the least wavelenght

Lens is made up of

The head mirror used by ENT doctors is

Which colour of light shows maximum deviation when passed through a prism ?

The filament of electric bulb is made up of

A body absorbs heat most if it is

The audio signals of TV are

Solar energy is due to