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One mole of an ideal gas is taken from s...

One mole of an ideal gas is taken from state `A` to state `B` by three different processes (a) `ACB`, (b) `ADB` and (c ) `AEB` as shown in the `P - V` diagram. The heat absorbed by the gas is

A

greater in process (b) than in (a)

B

the least in process (b)

C

the same in (a) and (c )

D

less in (c ) than in (b)

Text Solution

Verified by Experts

The correct Answer is:
D
d. Heat absorbed by gas in three process is given by
`Q_(ACB) = Delta U + W_(ACB)`
`Q_(ADB) = Delta U`
`Q_(AEB) = Delta U + W_(AEB)`
The change in internal erergy in all the three caese in same and `W_(ACB)` is positive, `W_(AEB)` is negative
Hence `Q_(ACB) gt Q_(ABD) gt Q_(AEB)`
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