# Gravitation-Universal Law of Gravitation (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 19 - 21 of 21

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## Question number: 19

» Gravitation » Universal Law of Gravitation

MCQ▾

### Question

Four particles, each of mass m, are placed at the corners of square and moving along a circle of radius r under the influence of mutual gravitational attraction. The speed of each particle will be –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Passage

The orbit of Pluto is much more eccentric than the orbits of the other planets. That is, instead of being nearly circular, the orbit is noticeably elliptical. The point in the orbit nearest to the sun is called the perihelion and the point farthest from the sun is called the aphelion.

## Question number: 20 (1 of 1 Based on Passage) Show Passage

» Gravitation » Universal Law of Gravitation

MCQ▾

### Question

At perihelion, the mechanical energy of Pluto’s orbit has

### Choices

Choice (4) Response

a.

The same value as at every other point in the orbit

b.

Its minimum value

c.

Its maximum value

d.

Value which depends on sense of rotation

## Question number: 21

» Gravitation » Universal Law of Gravitation

Appeared in Year: 2017

MCQ▾

### Question

Two astronauts are floating in gravitational free space after having lost contact with their spaceship. The two will –

### Choices

Choice (4) Response

a.

Will become stationary

b.

Move away from each other

c.

Move towards each other

d.

Keep floating at the same distance between them

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