MEDIUM
11th ICSE
IMPORTANT
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The speed of sound in air is 332 m s-1 at NTP. The speed in hydrogen at NTP will be roughly :

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Important Questions on Wave Motion

HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 29 - Wave Motion>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 11
The ratio of the speed of sound in nitrogen gas to that in helium gas, at 300 K  is :
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 29 - Wave Motion>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 12
The speed of sound in oxygen O2 at a certain temperature is 460 ms-1. The speed of sound in helium He at the same temperature will be (assume both gases to be ideal) :
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 29 - Wave Motion>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 13
The velocities of sound in an ideal gas at temperatures T1 and T2 K are found to be v1 and v2 respectively. If the root-mean-square velocities of the same gas at the same temperatures are c1 and c2 respectively, then:
EASY
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 29 - Wave Motion>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 14
The speed of sound at 0°C is v0. The speed at 273°C will be: 
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 29 - Wave Motion>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 15
The temperature at which the speed of sound in air becomes double of its value at 27°C is:
MEDIUM
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 29 - Wave Motion>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 16
If the volume elasticity of freshwater and seawater be the same, then, for, the speed of sound to be the same in freshwater and in seawater :
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 29 - Wave Motion>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 17
The speed of a sound wave of frequency 150 Hz is v at a place. The speed of another sound wave of frequency 300 Hz  at the same place will be :
HARD
11th ICSE
IMPORTANT
ISC Physics Class XI Part 1>Chapter 29 - Wave Motion>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 18
Infrasonic, audible and ultrasonic sound waves travel through a medium with speed vi , va and vu respectively. Then :