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

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Ans. Becomes Half.

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

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

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