The wave described by y=0.25 sin(10πx-2πt), where x and y are in metre and t in second, is a wave travelling along the 

(a) -ve x direction with frequency 1 Hz 

(b) +ve x direction with frequency π Hz and wavelength λ=0.2m 

(c) + ve x direction with frequency 1 Hz and wavelength λ=0.2 m

(d) - ve x direction with amplitude 0.25 m and wavelength λ=0.2 m

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The distance between two consecutive crests in a wave train produced in a string is 5 cm. If 2 complete waves pass through any point per second, the velocity of the wave is :

(1) 10 cm/sec

(2) 2.5 cm/sec

(3) 5 cm/sec

(4) 15 cm/sec

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A tuning fork makes 256 vibrations per second in air. When the velocity of sound is 330 m/s, then the wavelength of the tone emitted is :

(1) 0.56 m

(2) 0.89 m

(3) 1.11 m

(4) 1.29 m

Concept Questions :-

Speed of sound
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Sound waves have the following frequencies that are audible to human beings :

(1) 5 c/s

(2) 27000 c/s

(3) 5000 c/s

(4) 50,000 c/s

Concept Questions :-

Speed of sound
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The minimum audible wavelength at room temperature is about

(1) 0.2 Å

(2) 5 Å

(3) 5 cm to 2 metre

(4) 20 mm

Concept Questions :-

Speed of sound
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The ratio of the speed of sound in nitrogen gas to that in helium gas, at 300 K is 

(1) 2/7

(2) 1/7

(3) 3/5

(4) 6/5

Concept Questions :-

Speed of sound
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The frequency of a rod is 200 Hz. If the velocity of sound in air is 340 ms–1, the wavelength of the sound produced is :

(1) 1.7 cm

(2) 6.8 cm

(3) 1.7 m

(4) 6.8 m

Concept Questions :-

Speed of sound
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A stone is dropped into a lake from a tower 500 metre high. The sound of the splash will be heard by the man approximately after 

[Given : Speed of sound = 340 m/s ]

(1) 11.5 seconds

(2) 21 seconds

(3) 10 seconds

(4) 14 seconds

Concept Questions :-

Speed of sound
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When sound waves travel from air to water, which of the following remains constant 

(1) Velocity

(2) Frequency

(3) Wavelength

(4) All the above

Concept Questions :-

Speed of sound
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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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