In simple Harmonic motion, the acceleration of the body is _____ proportional to the displacement.

The speed of sound in iron at 25 oC is ms-1

A device which has two ways communication is:

For a normal person audible frequency range for sound wave lies between:

A positive electric charge:

The equivalent resistance of a parallel combination is

Which instrument measures the potential difference:

According to coulomb’s law, what happens to the attraction of two oppositely charged objects as their distance of separation increases:

A positive electric charge:

Each volt of lightening contains energy:

The brain of any computer system is:

What happen to the atomic number of an element which emits one alpha particle and a beta particles.