JEE PHYSICS MCQ: WAVES

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Application +4 | -1

Determine the change in volume of 6 litres of alcohol if the pressure is decreased from

200 \mathrm{~cm}

\mathrm{Hg}

75 \mathrm{~cm}

. [velocity of sound in alcohol is

1280 \mathrm{~m} / \mathrm{s}

, density of alcohol

=0.81\,\mathrm{gm} / \mathrm{cc}

, density of

\mathrm{Hg}=13.6\,\mathrm{gm} / \mathrm{cc}

and

\left.g=9.81 \mathrm{~m} / \mathrm{s}^2\right]

View answer and explanation

Correct option: A

0.75 cc

Option A (0.75 cc) is correct because it is the change in volume calculated using the bulk modulus and the change in pressure.

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