1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
The density of water at 20oC is 998 kg/m3 and at 40oC is 992 kg/m3. The coefficient of volume expansion of water is
A
3 $$ \times $$ 10$$-$$4/oC
B
2 $$ \times $$ 10$$-$$4/oC
C
6 $$ \times $$ 10$$-$$4/oC
D
10 $$ \times $$ 10$$-$$4/oC
2
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
If the ratio of diameters, lengths and Young's modulus of steel and copper wires shown in the figure are p, q and s respectively, then the corresponding ratio of increase in their lengths would be

NEET 2013 (Karnataka) Physics - Properties of Matter Question 55 English
A
$$\left( {{{5q} \over {7s{p^2}}}} \right)$$
B
$$\left( {{{7q} \over {5s{p^2}}}} \right)$$
C
$$\left( {{{2q} \over {5sp}}} \right)$$
D
$$\left( {{{7q} \over {5sp}}} \right)$$
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following relations does not give the equation of an adiabatic process, where terms have their usual meaning?
A
P1$$-$$$$\gamma $$ T$$\gamma $$  =  constant
B
PV$$\gamma $$   =  constant
C
TV$$\gamma $$$$-$$1  =  constant
D
P$$\gamma $$  T1$$-$$$$\gamma $$  =  constant
4
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
Two Carnot engines A and B are operated in series. The engine A receives heat from the source at temperature T1 and rejects the heat to the sink at temperature T. The second engine B receives the heat at temperature T and rejects to its sink at temperature T2. For what values of T the efficiencies of the two engines are equal
A
$${{{T_1} - {T_2}} \over 2}$$
B
$${T_1}{T_2}$$
C
$$\sqrt {{T_1}{T_2}} $$
D
$${{{T_1} + {T_2}} \over 2}$$