1
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
A bullet of mass 10 g moving horizontally with a velocity of 400 m s$$-$$1 strikes a wood block of mass 2 kg which is suspended by light inextensible string of length 5 m. As a result, the centre of gravity of the block found to rise a vertical distance of 10 cm. The speed of the bullet after it emerges out horizontally from the block will be
A
100 m s$$-$$1
B
80 m s$$-$$1
C
120 m s$$-$$1
D
160 m s$$-$$1
2
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
Two identical balls A and B having velocities of 0.5 m s$$-$$1 and $$-$$0.3 m s$$-$$1 respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be :
A
$$-$$0.5 m s$$-$$1 and 0.3 m s$$-$$1
B
0.5 m s$$-$$1 and $$-$$0.3 m s$$-$$1
C
$$-$$0.3 m s$$-$$1 and 0.5 m s$$-$$1
D
0.3 m s$$-$$1 and 0.5 m s$$-$$1
3
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
A particle moves from a point $$\left( { - 2\widehat i + 5\widehat j} \right)$$ to $$\left( {4\widehat j + 3\widehat k} \right)$$ when a force of $$\left( {4\widehat i + 3\widehat j} \right)$$ N is applied. How much work has been done by the force ?
A
8 J
B
11 J
C
5 J
D
2 J
4
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
Two rotating bodies A and B of masses m and 2m with moments of inertia $${I_A}$$ and $${I_B}$$ ($${I_B}$$ > $${I_A}$$) have equal kinetic energy of rotation. If LA and LB be their angular momenta respectively, then
A
$${L_A} = {{{L_B}} \over 2}$$
B
$${L_A} = 2{L_B}$$
C
$${L_B} > {L_A}$$
D
$${L_A} > {L_B}$$
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