Waves — Physics MCQs (Class 11)
Free chapter-wise Physics MCQs with answers for MDCAT, FSc and entry tests.
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#25 The speed of sound in air at 0°C is about
A) 332 m/s
B) 343 m/s
C) 350 m/s
D) 360 m/s
#26 The speed of sound in air increases with
A) Increase in temperature
B) Increase in pressure
C) Increase in humidity
D) All of these
#27 The speed of sound in a gas is given by
A) \(v=\gamma P/\rho\)
B) \(v=P \gamma/\rho\)
C) \(v=\gamma \rho / P\)
D) \(v=P \gamma/\rho\)
#28 The ratio of speed of sound in hydrogen to that in oxygen at the same temperature is
A) 1:4
B) 4:1
C) 1:16
D) 16:1
#29 The speed of sound in water is about
A) 332 m/s
B) 343 m/s
C) 1500 m/s
D) 5000 m/s
#30 The speed of sound in solids is
A) Less than in gases
B) Greater than in gases
C) Equal to that in gases
D) Sometimes greater, sometimes less
#31 The speed of sound in a gas is inversely proportional to the square root of its
A) Density
B) Pressure
C) Temperature
D) Volume
#32 The speed of sound in air at 20°C is about
A) 332 m/s
B) 343 m/s
C) 350 m/s
D) 360 m/s
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