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Assertion (A): A jet aircraft moving at Mach Number equal to 1 travels faster at an altitude of 15 km than while moving at sea level.
Reason (R): The velocity of sound depends on the temperature of the surrounding medium.

Options

(a)

Both A and R are individually true and R is the correct explanation of A.

(b)

Both A and R are individually true but R is not the correct explanation of A.

(c)

A is true but R is false

(d)

A is false but R is true

Answer

(A)