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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Speed of sound at constant temperature depends on :

(1) Pressure

(2) Density of gas

(3) Above both

(4) None of the above

Concept Questions :-

Speed of sound
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Sound velocity is maximum in :

(1) H2

(2) N2

(3) He

(4) O2

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The minimum distance of reflector surface from the source for listening the echo of sound is :

(1) 28 m

(2) 18 m

(3) 19 m

(4) 16.5 m

Concept Questions :-

pressure wave in sound
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The type of waves that can be propagated through solid is :

(1) Transverse

(2) Longitudinal

(3) Both (1) and (2)

(4) None of these

Concept Questions :-

Types of waves
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Velocity of sound in air

I. Increases with temperature

II. Decreases with temperature

III. Increase with pressure

IV. Is independent of pressure

V. Is independent of temperature

Choose the correct answer. [Kerala (Engg.) 2001]

(1) Only I and II are true

(2) Only I and III are true

(3) Only II and III are true

(4) Only I and IV are true

Concept Questions :-

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If at same temperature and pressure, the densities for two diatomic gases are respectively d1 and d2, then the ratio of velocities of sound in these gases will be :

(1) d2d1

(2) d1d2

(3) d1d2

(4) d1d2

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The velocity of sound measured in hydrogen and oxygen gas at a given temperature will be in the ratio :

(1) 1 : 4

(2) 4 : 1

(3) 2 : 1

(4) 1 : 1

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If vm is the velocity of sound in moist air, vd is the velocity of sound in dry air, under identical conditions of pressure and temperature 

(1) vm > vd

(2) vm < vd

(3) vm = vd

(4) vmvd = 1

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A source of the sound of frequency 600 Hz is placed inside water. The speed of sound in water is 1500 m/s and in the air is 300 m/s. The frequency of sound recorded by an observer who is standing in the air is : 

(1) 200 Hz

(2) 3000 Hz

(3) 120 Hz

(4) 600 Hz

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