1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
A solid cylinder of mass 2 kg and radius 4 cm is rotating about its axis at the rate of 3 rpm. The torque required to stop after 2$$\pi $$ revolutions is :
A
2 × 10–3 N m
B
2 × 10–6 N m
C
2 × 106 N m
D
12 × 10–4 N m
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
The speed of a swimmer in still water is 20 m/s. The speed of river water is 10 m/s and is flowing due east. If he is standing on the south bank and wishes to cross the river along the shortest path, the angle at which he should make his strokes w.r.t. north is given by :
A
0o
B
60
C
45o west
D
30o west
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre :
A
zero as r increases for r < R, decreases as r increases for r > R
B
zero as r increases for r < R, increases as r increases for r > R.
C
decreases as r increases for r < R and for r > R.
D
increases as r increases for r < R and for r > R.
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
At a point A on the earth’s surface the angle of dip, $$\delta $$ = + 25o. At a point B on the earth's surface the angle of dip, $$\delta $$ = – 25o. We can interpret that :
A
A is located in the southern hemisphere and B is located in the northern hemisphere.
B
A is located in the northern hemisphere and B is located in the southern hemisphere.
C
A and B are both located in the southern hemisphere.
D
A and B are both located in the northerm hemisphere.