Question

Kinetic energy is:

• A. Directly proportional to temperature
• B. Inversely proportional to temperature
• C. Directly proportional to heat
• D. Directly proportional to friction

Answer 1

The correct option is A Directly proportional to temperature

The kinetic energy of an object is the function of temperature. At absolute zero, the kinetic energy of an object is zero and as the temperature increases the molecules of an object starts to vibrate at their mean position. Hence, as we increase the temperature, the kinetic energy of the molecules increases. Hence, the average kinetic energy of gas molecules is directly proportional to absolute temperature only; this implies that all molecular motion ceases if the temperature is reduced to absolute zero.