1
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Certain quantity of water cools from 70oC to 60oC in the first 5 minutes and to 54oC in the next 5 minutes. The temperature of the surroundings is
A
45oC
B
20oC
C
42oC
D
10oC
2
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
A monatomic gas at a pressure P, having a volume V expands isothermally to a volume 2V and then adiabatically to a volume 16V. The final pressure of the gas is (Take $$\gamma $$ = 5/3)
A
64P
B
32P
C
P/64
D
16P
3
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
A thermodynamic system undergoes cyclic process ABCDA as shown in figure. The work done by the system in the cycle is

AIPMT 2014 Physics - Heat and Thermodynamics Question 62 English
A
P0V0
B
2P0V0
C
$${{{P_0}{V_0}} \over 2}$$
D
zero
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
The mean free path of molecules of a gas, (radius r) is inversely proportional to
A
r3
B
r2
C
r
D
$$\sqrt r $$
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