Question

5.
A monatomic gas at a pressure P, having a volume
V expands isothermally to a volume 3V and then
compresses adiabatically to the volume V, the final
pressure of the gas is
[NCERT Pg. 312]
5
(1) 33 P
(2) 332
Р
(3)
(4) 3 P
3​

Answer 1

Explanation:

Isothermally PV=P

1

2V

P

1

=

2

P

Adiabatically,

2

P

(2V)

γ

=P

1

(16V)

γ

P

f

=

2

P

(

2

3

1

)

3

5

P

t

=

2

P

(

2

3

1

)

3

5

=

(2)(2)

5

P

P

f

=

6

P

FOR ANY REFERENCE I HAVE GIVEN THE WRIITEN ANSWER ALSO