Assertion: A body becomes weightless at the centre of earth.
Reason: As the distance form centre of earth decreases, acceleration due to gravity increases.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false

Answer

C

Explanation

As the distance from centre of earth decreases, acceleration due to gravity decreases and at the centre of earth it becomes zero.
`g.=g(1-d/R).` If d =R then g.=0