Question

if the velocity of sound in gas is v at temp t and pressure p how does it change if temp is doubled pressure is halved and humidity in gas is increased
​

Answer 1

Explanation:

Using Ideal gas equation, number of moles of gas n=

RT

PV

New pressure P

′

=2P

New temperature T

′

=2T

New volume V

′

=V/2

Thus number of moles of gas n

′

=

RT

′

P

′

V

′

∴ n

′

=

R(2T)

(2P)(V/2)

=

2

n

So, option A is correct.

Answer 2

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