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
The displacement 'x' (in meter) of a particle of mass 'm' (in kg) moving in one dimension under the action of a force, is related to time 't' (in sec) by t = $$\sqrt x + 3$$. The displacement of the particle when its velocity is zero, will be
A
4 m
B
0 m (zero)
C
6 m
D
2 m
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
Vectors $$\overrightarrow A ,\overrightarrow B $$ and $$\overrightarrow C $$ are such that $$\overrightarrow A .\overrightarrow B = 0$$ and $$\overrightarrow A .\overrightarrow C = 0$$. Then the vector parallel to $$\overrightarrow A $$ is
A
$$\overrightarrow A \times \overrightarrow B $$
B
$$\overrightarrow B + \overrightarrow C $$
C
$$\overrightarrow B \times \overrightarrow C $$
D
$$\overrightarrow B $$ and $$\overrightarrow C $$
4
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s. Each bullet has a mass of 10 g with a muzzle velocity of 800 m s$$-$$1. The final velocity acquired by the person and the average force exerted on the person are :
A
$$-$$0.08 ms$$-$$1, 16 N
B
$$-$$0.8 ms$$-$$1, 8 N
C
$$-$$1.6 ms$$-$$1, 16 N
D
$$-$$1.6 ms$$-$$1, 8 N
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