Question

Assertion :As one goes inside the surface of the earth, the value of g increases. Reason: The force of gravitational attraction between two bodies varies inversely as the square of the distance between them.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is D Both Assertion and Reason are incorrect

$g=\frac{GM}{r^2}$

where $r=$ distance from centre from the earth when we will go inside the earth, r will decrease and hence ${}^{\prime }{g}^{\prime }$ will increase as $G$ and $M$ are constant.

Force between two bodies $=\frac{G{M}_1{M}_2}{r^2}$

$\Rightarrow$ Varies inversely with the square of distance with them.

Both assertion and reason are correct.

Given answer is wrong.