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Internal Energy

Internal ener...

Question

Internal energy of an ideal gas depends on:
i. the volume of the ideal gas
ii. the pressure of the ideal gas
iii. the absolute temperature of the ideal gas

A

ii

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B

iii

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C

ii and iii

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D

1, ii and iii

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Solution

The correct option is B iii
Internal energy of an ideal gas
$U = n R T$
It depends on absolute temperature of ideal gas.

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Q. Assertion :Internal energy of an ideal gas does not depend upon volume of the gas. Reason: This is because internal energy of ideal gas depends on temperature of gas.

Q. The internal energy U of an ideal gas depends only on its temperature T, not on its pressure or volume.

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The internal energy of an ideal gas depends on:

Q. An ideal gas in thermally insulated vessel at internal pressure

= p_{1}

= V_{1}

and absolute temperature

= T_{1}

expands irreversibly against zero external pressure, as shown in the diagram.
The final internal pressure, volume and absolute temperature of the gas are

p_{2}, V_{2} a n d T_{2}

respectively.
For this expansion

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