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Gas Pressure and Temperature

If 20 cm 3 ga...

Question

If $20 c m^{3}$ gas at 1 atm. is expanded to $50 c m^{3}$ at constant T, then what is the final pressure

A

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B

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C

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D

None of these

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Solution

The correct option is A

$A t c o n s t a n t T, P_{1} V_{1} = P_{2} V_{2}$

$1 \times 20 = P_{2} \times 50; P_{2} = \frac{20}{50} \times 1$

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