1
NEET 2021
+4
-1
The escape velocity from the Earth's surface is v. The escape velocity from the surface of another planet having a radius, four times that of Earth and same mass density is :
A
4$$\upsilon$$
B
$$\upsilon$$
C
2$$\upsilon$$
D
3$$\upsilon$$
2
NEET 2021
+4
-1
A particle of mass 'm' is projected with a velocity $$\upsilon$$ = kVe = (k < 1) from the surface of the earth. (Ve = escape velocity)

The maximum height above the surface reached by the particle is :
A
$${{R{k^2}} \over {1 - {k^2}}}$$
B
$$R{\left( {{k \over {1 - {k^2}}}} \right)^2}$$
C
$$R{\left( {{k \over {1 + {k^2}}}} \right)^2}$$
D
$${{{R^2}k} \over {1 + k}}$$
3
NEET 2020 Phase 1
+4
-1
A body weighs 72 N on the surface of the earth. What is the gravitational force on it, at a height equal to half the radius of the earth?
A
32 N
B
30 N
C
24 N
D
48 N
4
NEET 2019
+4
-1
The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth, is :
A
mgR
B
2mgR
C
$${1 \over 2}$$mgR
D
$${3 \over 2}$$mgR
NEET Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Biology
Botany
Zoology
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