Assertion :When a real gas is allowed to expand adiabatically through a fine hole from a region of high pressure to a region of low pressure, the temperature at the gas falls. Reason: Work is done at the cost of internal energy of the gas.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
As we know,
$W = P Δ V$
and
In adiabatic process, q=0 hence
in expansion process, work is done by gas at the cost of internal energy and temperature of the system decreases.

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Assertion :When a real gas is allowed to expand adiabatically through a fine hole from a region of high pressure to a region of low pressure, the temperature at the gas falls. Reason: Work is done at the cost of internal energy of the gas.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionAs we know,W=PΔVand In adiabatic process, q=0 hence in expansion process, work is done by gas at the cost of internal energy and temperature of the system decreases.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
As we know,
$W = P Δ V$
and
In adiabatic process, q=0 hence
in expansion process, work is done by gas at the cost of internal energy and temperature of the system decreases.