At what temperature velocity of sound is double than that of at 0°C 

(1) 819 K

(2) 819°C

(3) 600°C

(4) 600 K

Concept Questions :-

Speed of sound
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If velocity of sound in a gas is 360 m/s and the distance between a compression and the nearest rarefaction is 1m, then the frequency of sound is 

(1) 90 Hz

(2) 180 Hz

(3) 360 Hz

(4) 720 Hz

Concept Questions :-

Speed of sound
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If the density of oxygen is 16 times that of hydrogen, what will be the ratio of their corresponding velocities of sound waves :

(1) 1 : 4

(2) 4 : 1

(3) 16 : 1

(4) 1 : 16

Concept Questions :-

Speed of sound
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At which temperature the speed of sound in hydrogen will be the same as that of the speed of sound in oxygen at 100°C :

(1) – 148°C

(2) – 212.5°C

(3) – 317.5°C

(4) – 249.7°C

Concept Questions :-

Speed of sound
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The phase difference between two points separated by 1m in a wave of frequency 120 Hz is 90°. The wave velocity is :

(1) 180 m/s

(2) 240 m/s

(3) 480 m/s

(4) 720 m/s

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The echo of a gunshot is heard 8 sec. after the gun is fired. How far from him is the surface that reflects the sound? (velocity of sound in air = 350 m/s) :

(1) 1400 m

(2) 2800 m

(3) 700 m

(4) 350 m

Concept Questions :-

Speed of sound
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A man sets his watch by the sound of a siren placed at a distance 1 km away. If the velocity of sound is 330 m/s

(1) His watch is set 3 sec. faster

(2) His watch is set 3 sec. slower

(3) His watch is set correctly

(4) None of the above

Concept Questions :-

Speed of sound
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Velocity of sound in air is

(1) Faster in dry air than in moist air

(2) Directly proportional to pressure

(3) Directly proportional to temperature

(4) Independent of pressure of air

Concept Questions :-

Speed of sound
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The frequency of a sound wave is n and its velocity is v. If the frequency is increased to 4n, the velocity of the wave will be 

(1) v

(2) 2v

(3) 4v

(4) v/4

Concept Questions :-

Speed of sound
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The speed of a wave in a certain medium is 960 m/s. If 3600 waves pass over a certain point of the medium in 1 minute, the wavelength is :

(1) 2 metres

(2) 4 metres

(3) 8 metres

(4) 16 metres

Concept Questions :-

Speed of sound
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