Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Hard-Class 11
If the speed of sound in air at STP is given inaccurately by Newton's formula as 280 m/s due to an incorrect assumption, what would be the correct speed of sound if the pressure variations are considered adiabatic instead of isothermal?
A
331 m/s
B
280 m/s
C
305 m/s
D
350 m/s
Correct Answer
Option A
Detailed Explanation
Newton's formula assumes isothermal conditions, which is incorrect. The correct speed under adiabatic conditions is 331 m/s, as the pressure variations in sound propagation are too fast for heat exchange.
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