1
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
JEE Main 2013 (Offline) Physics - Heat and Thermodynamics Question 296 English

The above $$p$$-$$v$$ diagram represents the thermodynamic cycle of an engine, operating with an ideal monatomic gas. The amount of heat, extracted from the source in a single cycle is

A
$${p_0}{v_0}$$
B
$$\left( {{{13} \over 2}} \right){p_0}{v_0}$$
C
$$\left( {{{11} \over 2}} \right){p_0}{v_0}$$
D
$$4{p_0}{v_0}$$
2
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
If a piece of metal is heated to temperature $$\theta $$ and then allowed to cool in a room which is at temperature $${\theta _0},$$ the graph between the temperature $$T$$ of the metal and time $$t$$ will be closest to
A
JEE Main 2013 (Offline) Physics - Heat and Thermodynamics Question 295 English Option 1
B
JEE Main 2013 (Offline) Physics - Heat and Thermodynamics Question 295 English Option 2
C
JEE Main 2013 (Offline) Physics - Heat and Thermodynamics Question 295 English Option 3
D
JEE Main 2013 (Offline) Physics - Heat and Thermodynamics Question 295 English Option 4
3
AIEEE 2012
MCQ (Single Correct Answer)
+4
-1
A Carnot engine, whose efficiency is $$40\% $$, takes in heat from a source maintained at a temperature of $$500$$ $$K.$$ It is desired to have an engine of efficiency $$60\% .$$ Then, the intake temperature for the same exhaust (sink) temperature must be :
A
efficiency of Carnot engine cannot be made larger than $$50\% $$
B
$$1200$$ $$K$$
C
$$750$$ $$K$$
D
$$600$$ $$K$$
4
AIEEE 2012
MCQ (Single Correct Answer)
+4
-1
Helium gas goes through a cycle $$ABCD$$ (consisting of two isochoric and isobaric lines) as shown in figure efficiency of this cycle is nearly : (Assume the gas to be close to ideal gas) AIEEE 2012 Physics - Heat and Thermodynamics Question 298 English
A
$$15.4\% $$
B
$$9.1\% $$
C
$$10.5\% $$
D
$$12.5\% $$
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