Question

1/f= 1/v+1/u. find the value of u. Ans is fv/f-v​

Answer 1

Answer:

This is the formula to find object distance, image distance or focal when any two of the derivatives are given

This is only applicable for any kind of mirrors.

Step-by-step explanation:

$\frac{1}{u} = \frac{1}{f} - \frac{1}{v} \\ = > \frac{1}{u} = \frac{v - f}{vf} \\ = > u = \frac{fv}{f - v}$

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