NEET 2021 | Gravitation Question 9 | Physics

NEET 2021

MCQ (Single Correct Answer)

-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 :

4$$\upsilon $$

$$\upsilon $$

2$$\upsilon $$

3$$\upsilon $$

NEET 2021

MCQ (Single Correct Answer)

-1

A particle of mass 'm' is projected with a velocity $$\upsilon $$ = kV_e = (k < 1) from the surface of the earth. (V_e = escape velocity)

The maximum height above the surface reached by the particle is :

$${{R{k^2}} \over {1 - {k^2}}}$$

$$R{\left( {{k \over {1 - {k^2}}}} \right)^2}$$

$$R{\left( {{k \over {1 + {k^2}}}} \right)^2}$$

$${{{R^2}k} \over {1 + k}}$$

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-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?

32 N

30 N

24 N

48 N

NEET 2019

MCQ (Single Correct Answer)

-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 :

mgR

2mgR

$${1 \over 2}$$mgR

$${3 \over 2}$$mgR

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Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution