Question

In the above problem, how its numerical value will change.

Answer 1

Ans. Becomes Half.

$\text { Since, } N_{1} U_{1}=N_{2} U_{2}$

$N_{2}=N_{1}\left[\frac{U_{1}}{U_{2}}\right]=N_{1}\left[\frac{U_{1}}{2 U_{1}}\right]=\frac{N_{1}}{2}$