1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

From a solid sphere of mass M and radius R, a spherical portion of radius $${R \over 2}$$ is removed as shown in the figure.

BITSAT 2021 Physics - Gravitation Question 2 English

Taking gravitational potential V = 0 at r = $$\infty$$, the potential at the centre of the cavity thus formed is

A
$$ - {{GM} \over {2R}}$$
B
$$ - {{GM} \over {R}}$$
C
$$ - {{2GM} \over {3R}}$$
D
$$ - {{2GM} \over {R}}$$
2
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

If the earth stops rotating about its axis, then what will be the change in the value of g at a place in the equatorial plane? (Radius of earth = 6400 km)

A
3.7 cm/s2
B
9.8 m/s2
C
0
D
3.4 cm/s2
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