Question

the radius of curvature of a spherical mirror is 20 cm. what is its focal length​

Answer 1

Answer:

The radius of curvature of a spherical mirror is 20 cm. What is its focal length? Therefore, the focal length of the spherical mirror is 10 cm.

Explanation:

Answer 2

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$\LARGE\mathfrak{\underline{\underline{\red{solution: }}}}$

The radius of curvature of a spherical mirror is 20 cm.

so,

$\large{ \sf{: \implies ƒ = \frac{r}{2} }} \\ \large{ \sf{ : \implies\frac{20}{2} =10cm}}$

Ans. ➠ So,the focal length will be be 10cm

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