In an elastic collisionI. Energy is conserved II. Energy is decreased III. Energy is increased IV. Linear momentum conversed

Momentum and Kinetic energy are conserved in

Efficiency of a transformer is equal to

The normal temperature of human body is record at what ranges?

The property of a body to remain at rest or to continue to move in a straight line is known as

When a man moves toward a plane mirror at a speed of 6m/s, the distance the man and his image increased at a speed of?

In which of the following device in the expansion of solid is a disadvantages?I. Simple pendulum II. Fire alarms III. Thermostat IV. Bimetallic thermometer

Volatile liquids usually

An alternating current with a frequency of 100HZ has a period of