Question

At melting point

• A. Kinetic energy remains constant and potential energy increase
• B. Kinetic energy increases and potential energy remains constant
• C. Both kinetic energy and potential energy increases
• D. Potential energy increases with decreases in kinetic energy

Answer 1

The correct option is A

Kinetic energy remains constant and potential energy increase

Kinetic energy: It is defined as the energy which a body possesses by virtue of being in motion.

Potential energy: It is defined as the energy which a body has by virtue of its position.

Melting point: It is defined as the temperature at which it changes its state from solid to liquid.

At this temperature heat energy is used to break the bonds between solid and because of that only potential energy will change.

Kinetic energy will not change.

Hence, option (a) is correct.