Q.

Why do the particles of the solid start to vibrate at increasing temperatures? 

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a

Because of the increase the molecular attraction.

b

Because of the decrease the molecular attraction.

c

Because of the increase in kinetic energy.

d

Because of the increase in static energy.

answer is A.

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Detailed Solution

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When we increase the temperature, the kinetic energy of the particle also increases. As a result, the particles of the solid start to vibrate in their place only, but they do not move from their position.

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