NEET2018Physics-Waves
NEET 2018 Physics Sound Waves MCQ Question
Type: MCQ-numerical-Medium-Class 11
A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27 °C two successive resonances are produced at 20 cm and 73 cm of column length. If the frequency of the tuning fork is 320 Hz, the velocity of sound in air at 27 °C is
A
330 m/s
B
339 m/s
C
350 m/s
D
300 m/s
Correct Answer
Option B
Detailed Explanation
The velocity of sound can be calculated using the resonance condition for a closed tube and the given frequency of the tuning fork.
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