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NEET 2020 Revision: Gravitation - 01 (25.02.2020)

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Question 1

If the earth stops moving around its polar axis then what will be the effect on the body placed at the south axis?

Question 2

Direction: In each of the following question a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as:

Assertion A planet moves faster, when it is closer to the sun in its orbit and vice-versa.
Reason Orbital velocity in orbit of planet is constant.

Question 3

A particle (A) is dropped from a height and another particle (B)is projected in horizontal direction with a speed of 5 m/s from the same height. Then the correct statement is:

Question 4

A planet of mass m is revolving around the sun with an areal velocity of A m²/s. At an instant when the planet is r distance from the sun and radius vector is making an angle Ɵ with the velocity. At the same instant, another planet travelling in opposite direction having the same mass, collides inelastically with the planet with half the instantaneous velocity of the planet. Find the combined velocity of the system after collision.

Question 5

If acceleration due to gravity at height h₁ from Earth is half of the acceleration due to gravity at distance h₂ from earth surface inside the Earth. Find the relation between h₁ and h₂. Let R be the radius of Earth.

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Feb 21NEET & AIIMS