1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
The molar specific heats of an ideal gas at constant pressure and volume are denoted by Cp and Cv, respectively. If  $$\gamma $$ = $${{{C_p}} \over {{C_v}}}$$ and R is the universal gas constant, then Cv is equal to
A
$${{\left( {\gamma - 1} \right)} \over R}$$
B
$$\gamma R$$
C
$${{1 + \gamma } \over {1 - \gamma }}$$
D
$${R \over {\left( {\gamma - 1} \right)}}$$
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
In the given (V $$-$$ T) diagram, what is the relation between pressure P1 and P2?

NEET 2013 Physics - Heat and Thermodynamics Question 66 English
A
P2 < P1
B
Carnot be predicted
C
P2 = P1
D
P2 > P1
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
A source of unknown frequency gives 4 beats/s when sounded with a source of known frquency 250 Hz. The second harmonic of the source of unknown frequency gives five beats per second, when sounded with a source of frequency 513 Hz. The unknown frequency is
A
240 Hz
B
260 Hz
C
254 Hz
D
246 Hz
4
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
A gas is taken through the cycle
A $$ \to $$ B $$ \to $$ C $$ \to $$ A, as shown. what is the net work done by the gas?

NEET 2013 Physics - Heat and Thermodynamics Question 65 English
A
Zero
B
$$-$$ 2000 J
C
2000 J
D
1000 J