1
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
2
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

Two spheres of the same material and same radii r are touching each other. The gravitational force between the spheres is proportional to

A
$${1 \over {{r^2}}}$$
B
r2
C
$${1 \over {{r^4}}}$$
D
r4
3
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

A satellite is moving around the earth with speed v in a circular orbit of radius r. If the orbit radius is decreased by 2%, its speed will increase by

A
1%
B
2%
C
1.5%
D
1.414%
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