Question

(ii) Focal length, -
-
--=0.22 m = -22 cm Ans. explain me this how to devide 10 by -45....amd send photo​

Answer 1

Answer:

1

$\frac{1}{v} + \frac{1}{u} = \frac{1}{f} \\ \frac{10}{ - 45} = - 0.22 \\ - 0.22 \times 10 = - 22$

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