Gravitation-Universal Law of Gravitation (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 15 - 18 of 21

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Question number: 15

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

A particle is suspended from a spring and it stretches the spring by 3 cm on the surface of earth. The same particle will stretches the same spring at a place 500 km above earth surface by -

Choices

Choice (4) Response

a.

1.25 cm

b.

Equation

c.

2.59 cm

d.

2.58 cm

Question number: 16

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

Spot the incorrect statements: The acceleration due to gravity ‘g’ decreases if

(1) We go down from the surface of the earth towards its center

(2) We go up from the surface of the earth

(3) The rotational velocity of the earth is increased

(4) We go from the poles towards the equators on the surface of the earth

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1, 2 and 3 are correct

c.

1 and 2 are correct

d.

1 and 3 are correct

Question number: 17

» Gravitation » Universal Law of Gravitation

Assertion-Reason▾

Assertion (Ꭺ)

Gravitational force between two particles is negligibly small compared to the electrical force.

Reason (Ꭱ)

The electrical force is experienced by charged particles only.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 18

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

Two concentric shells of uniform density having masses M 1 and M 2 are situated as shown in the figure. The force on the particle of mass m when it is located at r = b is

Two concentric shells - having masses M1 and M2

Two Concentric Shells - Having Masses M1 and M2

In above fig we shows that two concentric shells of uniform density having masses M1 and M2

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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