Escape Velocity NEET Questions

Physics - Gravitation

Escape Velocity MCQ Questions


1.
The escape velocity from the Earth’s surface is approximately:
A.
5.6 km/s
B.
9.8 km/s
C.
11.2 km/s
D.
15.4 km/s
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ANSWER :
C. 11.2 km/s
2.
Escape velocity is the minimum speed required:
A.
To maintain an orbit around Earth
B.
To leave Earth's gravitational influence
C.
To reach the Sun
D.
To complete one revolution around Earth
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ANSWER :
B. To leave Earth's gravitational influence
3.
If the radius of a planet is doubled while keeping the mass the same, the escape velocity will:
A.
Increase
B.
Decrease
C.
Remain the same
D.
Become zero
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ANSWER :
B. Decrease
4.

The formula for escape velocity is:

A.

ve = √(2GM/R)

B.

ve = GM/R2

C.

ve = √(gR)

D.

ve = 2GM/R2

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ANSWER :

A. ve = √(2GM/R)

5.
The escape velocity on the Moon is approximately:
A.
2.3 km/s
B.
5.6 km/s
C.
9.8 km/s
D.
11.2 km/s
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ANSWER :
A. 2.3 km/s
6.
If the mass of a planet is doubled while keeping the radius the same, the escape velocity will:
A.
Increase by √2 times
B.
Decrease by √2 times
C.
Remain the same
D.
Double
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ANSWER :
A. Increase by √2 times