The acceleration due to gravity at a distance x from the centre of earth is `8ms^(-2)`. The earth shrinks in radius by 5% but its mass remains constant. The acceleration due to gravity at a disatance 'x' from the centre of earth now is:

Options

A. `7ms^(-2)`
B. `8ms^(-2)`
C. `9ms^(-2)`
D. `4ms^(-2)`.

Answer

B

Explanation

As mass of earth and distance from the earth remains the same even on shrinking
`therefore ` The value of g will not change.
Thus correct choice is (b).