Question

Kinetic energy of the particles:
A. Is the energy of the bulk matter
B. Decrease with the increase in temperature
C. Increase with increase in temperature
D. Temperature has no effect on kinetic energy

Answer 1

Hint: Kinetic energy is the energy which a body possesses by virtue of being in motion. There are two factors which affect the kinetic energy of a particle (such as mass and speed of the particles).

Complete step by step answer:
Kinetic energy of the particles increases with increase in temperature as when we increase the temperature the particles absorb energy resulting in speed of velocity. The kinetic energy of a particle is directly proportional to temperature.
The kinetic of a massive body in calculated as half its mass $\left( m \right)$ time the square of its velocity$(v)$
$E = \dfrac{1}{2}m{v^2}$
Kinetic energy is a scalar quantity that does not depend on direction and it is always positive.

So, the correct answer is Option C.

Additional information:
Kinetic energy can also be transferred from one particle to another in a collision (Collision can be elastic or inelastic). Kinetic energy can be transferred into other forms of energy and vice versa. Let us take an example to understand how kinetic energy is converted from one form to another form, Kinetic energy can be converted into electrical energy by a generator or into a thermal energy by the brakes on a car.
Electrical energy also converted back to kinetic energy by an electric motor and thermal energy can be converted to kinetic energy by a steam turbine.

Note: We know that the kinetic energy of a particle depends on the mass and speed. If we double the mass of a particle, we double the energy and when we double the speed of a particle its energy is increased by a factor of four by the above mathematical relation.