Question

object distance of concave mirror 45cm and image distance of the mirror 60cm find the focal length of the mirror?​

Answer 1

WE KNOW,

$\frac{1}{f} = \frac{1}{v} + \frac{1}{u}$

PUTTING VALUE,

$\frac{1}{f} = \frac{1}{v} + \frac{1}{u} \\ = > \frac{1}{f} = \frac{1}{60} + \frac{1}{45} \\ = > f = \frac{180}{7} \: \: \: \: \: \: \: </strong><strong>\</strong><strong>:</strong><strong>\: \\ = > f = 25.71$

///MARK IT BRAINLIEST///