If the earth were to suddenly contract to $\frac{1}{n}^{th}$ of its present radius without any change in its mass then duration of the new day will be
If the earth were to suddenly contract to $\frac{1}{n}^{th}$ of its present radius without any change in its mass then duration of the new day will be
- A
$\frac{{24}}{n}\,hr$
- B
$24\, n\, hr$
- C
$\frac{{24}}{n^2}\,hr$
- D
$24\, n^2\, hr$
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