Question

if radius of curvature is 10cm . what will be the focus value
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Answer 1

Answer:

$\boxed{\sf Focus \ (F) = 5 \ cm}$

Given:

Radius of curvature (R) = 10 cm

To Find:

Focus (f)

Explanation:

$\boxed{ \bold{\sf Focus \ (f) = \frac{Radius \ of \ curvature \ (R)}{2}}}$

$\sf \implies f = \frac{10}{2}$

$\sf \implies f = \frac{ \cancel{2} \times 5}{ \cancel{2}}$

$\sf \implies f = 5 \: cm$