1
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
A body of mass 1 kg begins to move under the action of a time dependent force $$\overrightarrow F = \left( {2t\widehat i + 3{t^2}\widehat J} \right)N,$$ where $${\widehat i}$$ and $${\widehat j}$$ are unit vectors along x and y axis. What power will be developed by the force at the time t ?
A
(2t3 + 3t4) W
B
(2t3 + 3t5) W
C
(2t2 + 3t3) W
D
(2t2 + 4t4) W
2
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
What is the minimum velocity with which a body of mass m must enter a vertical loop of radius R so that it can complete the loop?
A
$$\sqrt {3gR} $$
B
$$\sqrt {5gR} $$
C
$$\sqrt {gR} $$
D
$$\sqrt {2gR} $$
3
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
A disc and a sphere of same radius but different masses roll off on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first?
A
Both reach at the same time
B
Depends on their masses
C
Disc
D
Sphere
4
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
From a disc of radius R and mass M, a circular hole of diameter R, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc about a perpendicular axis, passing through the centre?
A
11 MR2/32
B
9 MR2/32
C
15 MR2/32
D
13 MR2/32
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