Assertion : In Maxwell - Boltzmann distribution of speeds , the curve broadens at higher temperature .
Reason : At a particular temperature , the individual speed of molecules as well as the distribution of speeds remains the same .

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion .
B. If both assertion and reason are true but reason is not the correct explanation of assertion .
C. If assertion is true but reason is false .
D. If both assertion and reason are false .

Answer

C

Explanation

Speed distribution curve broadens at higher temperature because number of molecules moving at higher speed increases. At a particular temperature, the individual speed of molecules keeps changing but the distribution of speeds remains same.