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Physics Question on Gravitation

Which of the following graphs represents the gravitational field intensity due to solid sphere of radius RR ?

A

(i)(i) only

B

(ii)(ii) only

C

(iii)(iii) only

D

(iv)(iv) only

Answer

(iii)(iii) only

Explanation

Solution

Let, aa solid sphere of radius RR, mass MM and centre at OO I=GMrR3,   (r<R)I = \frac{GMr}{R^3}, \,\,\,(r < R ) if r>Rr > R I=GMr2 I = \frac{GM}{r^2}