Question

Assertion : Sound would travel faster on a not summer day than on a cold winter day,
Reason : Velocity of sound is directly proportional to the square of its aboslute temperature.
A. If both assertion and reason are true and reason is the correct expleanation of assertion.
B. If both assertion and reason are true and reason is not the correct expleanation of assertion.
C. If assertion is true but reason is false.
D. If assertion and reason both are false.

Answer 1

Correct Answer - A
The velocity of sound in a gas is directly proportional to the square root of its absolute temperature (as `v=sqrt((gammaRT)/(M)))`. Since temperature of a hot day is more than cold winter day, therefore sound would travel faster on a hot summer day than on a cold winter day.