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NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
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 48 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
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.
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
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
4
NEET 2013
MCQ (Single Correct Answer)
+4
-1
A piece of iron is heated in a flame. It first becomes dull red then becomes reddish yellow and finally turns to white hot. The correct explanation for the above observation is possible by using
A
Kirchhoff's Law
B
Newton's Law of cooling
C
Stefan's Law
D
Wien's displacement Law
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