1
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.
2
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.
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
A 800 turn coil of effective area 0.05 m2 is kept. perpendicular to a magnetic filed 5 × 10–5 T. When the plane of the coil is rotated by 90o around any of its coplanar axis in 0.1 s, the emf induced in the coil will be :
A
0.2 V
B
0.02 V
C
2 V
D
2 $$ \times $$ 10-3 V
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when :
A
the wire is horizontal
B
inclined at an angle of 60o from vertical
C
the mass is at the lowest point
D
the mass is at the highest point