Question

3. Two cylinders A and B fitted with pistons contain
equal amounts of an ideal diatomic gas at 300 K.
Piston A is free to move and piston of B is fixed.
Same amount of heat is given to the gases in the two
cylinders. Temperature of the gas in cylinder A
increases by 30 K. Then, increase in temperature of
the gas in the cylinder B is (y = 14 for diatomic gas)
[EAMCET 2013]
(a) 24 K
(b) 36 K
(c) 54 k
(d) 42 k​

Answer 1

easy one...

According to the question

just apply

$\frac{change \: in \: temp \: in \: piston \: b}{change \: in \: temp \: in \: piston \: a} = \gamma \\ \\ t2 = 1.4 \times 30 = 42k$

physics=life

thanku

Answer 2

Answer:

Since the piston of A is free to move, the pressure inside the cylinder A remains the same. Thus, for given heat H to the system,

H=nC

P

ΔT

1

The piston in cylinder B is fixed. Thus volume remains constant.

H=nC

V

ΔT

2

⟹

ΔT

1

ΔT

2

=

C

V

C

P

=1.4

⟹ΔT

2

=42 K

Explanation:

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