1
IIT-JEE 2012 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1

Three very large plates of same area are kept parallel and close to each other. They are considered as ideal black surfaces and have very high thermal conductively. The first and third plates are maintained at temperatures 2T and 3T, respectively. The temperature of the middle (i.e. second) plate under steady state condition is

A
$${\left( {{{65} \over 2}} \right)^{1/4}}T$$
B
$${\left( {{{97} \over 4}} \right)^{1/4}}T$$
C
$${\left( {{{97} \over 2}} \right)^{1/4}}T$$
D
$${(97)^{1/4}}T$$
2
IIT-JEE 2011 Paper 1 Offline
MCQ (Single Correct Answer)
+2
-0.5
5.6 liter of helium gas at STP is adiabatically compressed to 0.7 liter. Taking the initial temperature to be T1, the work done in the process is
A
$${9 \over 8}R{T_1}$$
B
$${3 \over 2}R{T_1}$$
C
$${15 \over 8}R{T_1}$$
D
$${9 \over 2}R{T_1}$$
3
IIT-JEE 2011 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

One mole of a monatomic gas is taken through a cycle ABCDA as shown in the PV diagram. Column II give the characteristics involved in the cycle. Match them with each of the processes given in Column I.

IIT-JEE 2011 Paper 2 Offline Physics - Heat and Thermodynamics Question 21 English

Column I Column II
(A) Process A$$ \to $$ B (P) Internal energy decreases.
(B) Process B$$ \to $$C (Q) Internal energy increase.
(C) Process C$$ \to $$D (R) Heat is lost.
(D) Process D$$ \to $$A (S) Heat is gained.
(T) Work is done on the gas.

A
(A)$$\to$$(P), (R), (T); (B)$$\to$$(P), R; (C)$$\to$$(Q), (S); (D)$$\to$$(R), (T)
B
(A)$$\to$$(P), (T); (B)$$\to$$(P), (R); (C)$$\to$$(Q), (S); (D)$$\to$$(R)
C
(A)$$\to$$(R), (T); (B)$$\to$$(P), (R); (C)$$\to$$(S); (D)$$\to$$(R), (T)
D
(A)$$\to$$(P), (R), (T); (B)$$\to$$(P), (R); (C)$$\to$$(Q); (D)$$\to$$(R), (T)
4
IIT-JEE 2010 Paper 1 Offline
MCQ (Single Correct Answer)
+2
-0.5
A real gas behaves like an ideal gas if its
A
pressure and temperature are both high
B
pressure and temperature are both low
C
pressure is high and temperature is low
D
pressure is low and temperature is high
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