AIPMT PRELIMS2011Physics-Waves
AIPMT PRELIMS 2011 Physics Sound Waves MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Sound waves travel at 350 m/s through a warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave as it enters brass from warm air
A
Decreases by a factor 20
B
Decreases by a factor 10
C
Increases by a factor 20
D
Increases by a factor 10
Correct Answer
Option D
Detailed Explanation
Since frequency is the same in both media, the wavelength is proportional to speed. Therefore, it increases by a factor of 10.
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