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Subject :NSO    Class : Class 9

A student plotted the following four graphs representing the variation of velocity v of sound in a gas with the pressure P for a given temperature. Which one is correct?


What is the reason for this

Ans 1:

Class : Class 9
Answer is D as sound velocity is not affected by increase or decrease in pressure if temperature remains constant

Ans 2:

Class : Class 9
The answer will be (D)

Ans 3:

Class : Class 9
doesnt sound travel faster in solids than in liquids and in liquids than gas ?isnt the answer A ?

Ans 4:

Class : Class 9

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