Question

if radius of earth were smaller by 1% its means density remaining the same then effect on the value of ‘g' at its surface is:
(a) increased by 1%
(b) decreased by 1%
(c) increased by 0.5%
(d) decreased by 2%​

Answer 1

Answer:

opt b

Explanation:

We know that g =4/3πRρG

Trick;- Since it is said that ρ is same

g is directly proportional to R thierfor dg/g = dR/R

also decreased by 1%