If the radius of earth shrinks by `0.2%` without change in its mass, the `%` change in its angular velocity is

Options

A. increases by `0.4 %`
B. increases by `0.1%`
C. decreases by `0.4%`
D. decreases by `0.1%`

Answer

A

Explanation

`Iomega=2/5MR^(2)omega=constantimpliesR^(2)omega`=contant.