1
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 52 English
A
$$\left( {{{5q} \over {7s{p^2}}}} \right)$$
B
$$\left( {{{7q} \over {5s{p^2}}}} \right)$$
C
$$\left( {{{2q} \over {5sp}}} \right)$$
D
$$\left( {{{7q} \over {5sp}}} \right)$$
2
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
Two metal rods 1 and 2 of same lengths have same temperature difference between their ends. Their thermal conductivities are K1 and K2 and cross sectional areas A1 and A2, respectively. If the rate of heat conduction in 1 is four times that in 2, then
A
K1A1 = 4K2A2
B
K1A1 = 2K2A2
C
4K1A1 = K2A2
D
K1A1 = K2A2
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
A fluid is in streamline flow across a horizontal pipe of variable area of cross section. For this which of the following statements is correct?
A
The velocity is maximum at the narrowest part of the pipe and pressure is maximum at the widest part of the pipe.
B
Velocity and pressure both are maximum at the narrowest part of the pipe.
C
velocity and pressure both are maximum at the widest part of the pipe.
D
The velocity is minimum at the narrowest part of the pipe and the pressure is minimum at the widest part of the pipe.
4
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
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