JEE PHYSICS MCQ: THERMODYNAMICS

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An adiabatic cylindrical tube of cross-sectional area

1 \mathrm{~cm}^2

is closed at one end and fitted with a piston at the other end. The tube contains

0.03 \mathrm{~g}

of an ideal gas. At

1 \mathrm{~atm}

pressure and at the temperature of the surrounding, the length of the gas column is

40 \mathrm{~cm}

. The piston is suddenly pulled out to double the length of the column. The pressure of the gas falls to

0.355 \mathrm{~atm}

. Find the speed of sound in the gas at atmospheric temperature.

View answer and explanation

Correct option: A

447 m/s

Option A (447 m/s) is correct because the speed of sound is calculated using the adiabatic process and the given parameters.

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