Home
Class 11
PHYSICS
The earth is an approximate sphere . If ...

The earth is an approximate sphere . If the interior contained matter which is not of the same density everywhere, then on the surface of the earth, the acceleration due to gravity.

A

will be directed towards the centre but not the same everywhere

B

will have the same value everywhere but not directed towards the centre

C

will be same everywhere in magnitude directed towards the centre

D

cannot be zero at any point

Text Solution

Verified by Experts

The correct Answer is:
D
If we assume the earth as a sphere of uniform density, then it can be treated as point mass placed at its centre. In this case acceleration due to gravity `g = 0`, at the centre.
If is not so, if the earth is considered as a sphere of non-uniform density, in that case value of `g` will be different at different points and cannot be zero at any point
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    NCERT EXEMPLAR ENGLISH|Exercise Very short Answer type question|11 Videos

  • GRAVITATION

    NCERT EXEMPLAR ENGLISH|Exercise Short Answer type question|6 Videos

  • KINETIC THEORY

    NCERT EXEMPLAR ENGLISH|Exercise Multiple Choice Questions (MCQs)|31 Videos

Similar Questions

Explore conceptually related problems

The earth is an approximate sphere. If the interior contained matter which is not of the same density every where, then on the surface of the earth, the acceleration due to gravity

Assuming the earth to be a sphere of uniform density, the acceleration due to gravity

If the density of the planet is double that of the earth and the radius 1.5 times that of the earth, the acceleration due to gravity on the planet is

If R is the radius of the Earth then the height above the Earth's surface at which the acceleration due to gravity decreases by 20% is

At which depth from Earth surface, acceleration due to gravity is decreased by 1 % ?

A planet has a mass of eight time the mass of earth and denisity is also equal to eight times a the average density of the earth. If g be the acceleration due to earth's gravity on its surface, then acceleration due to gravity on planet's surface will be

How is the acceleration due to gravity on the surface of the earth related to its mass and radius ?

The mass of a planet is twice the mass of earth and diameter of the planet is thrie the diameter of the earth, then the acceleration due to gravity on the planet's surface is

A body is thrown from the surface of the earth with velocity u m/s. The maximum height in metre above the surface of the earth upto which it will reach is (where, R = radish of earth, g=acceleration due to gravity)

The value of acceleration due to gravity at the surface of earth