Q. Consider the following statements regarding kinetic energy:
1.On increasing the temperature of solids, the kinetic energy of the particles increases.
2.Due to the increase in kinetic energy, the particles start vibrating with greater speed.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Explanation: On increasing the temperature of solids, the kinetic energy of the particles increases. Due to the increase in kinetic energy, the particles start vibrating with greater speed. The energy supplied by heat overcomes the forces of attraction between the particles.

Source: Science NCERT 9th Class