1
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
Figure below shows two paths that may be taken by a gas to go from a state A to a state C.

AIPMT 2015 Cancelled Paper Physics - Heat and Thermodynamics Question 75 English
In process AB, 400 J of heat is added to the system and in process BC, 100 J of heat is added to the system. The heat absorbed by the system in the process AC will be
A
460 J
B
300 J
C
380 J
D
500 J
2
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
The ratio of the specific heats $${{{C_p}} \over {{C_v}}} = \gamma $$ in terms of degrees of freedom (n) is given by
A
$$\left( {1 + {2 \over n}} \right)$$
B
$$\left( {1 + {n \over 2}} \right)$$
C
$$\left( {1 + {1 \over n}} \right)$$
D
$$\left( {1 + {n \over 3}} \right)$$
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m2. Assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force will be $$({\rho _{air}} = 1.2kg/{m^3})$$
A
2.4 $$ \times $$ 105 N, upwards
B
2.4 $$ \times $$ 105 N, downwards
C
4.8 $$ \times $$ 105 N, downwards
D
4.8 $$ \times $$ 105 N, upwards
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
A Carnot engine, having an efficiency of as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is
A
90 J
B
1 J
C
100 J
D
99 J