It is connected between a telephone line and computer is

The process involved in making soap is

A Zener diode differs from a regular diode in that:

In a closed organ pipe, the frequencies of vibration are in the ratio:

Consider the following two statements

(A) Kirchhoff's junction law follows from the conservation of charge.

What type of radiation is produced by a hot object emitting energy?  

The 'four stroke petrol engine' is based on –

In which type of wave do the particles of the medium vibrate perpendicular to the direction of wave propagation?  

In the absence of ozone layer, which rays will enter into atmosphere?

A device used for converting A.C. into D.C. is called –

Cryogenics is the branch of physics that deals with what?