Question

the radius of a curvature of a mirror is 30cm . what it is focal length​

Answer 1

⠀⠀⠀⠀ ⠀ ✁ Question...

The radius of a curvature of a mirror is 30cm . what it is focal length...??⠀⠀ ⠀⠀

⠀⠀⠀⠀ ⠀ ✂ To find...

⠀⠀⠀Focal length...

⠀⠀⠀⠀ ⠀✂ Solution...

We know...

Focal length = Radius / 2

So,..

⠀⠀Focal length = 30 cm / 2

• Focal length = 15 cm... ⠀⠀⠀

Answer 2

Answer:

15

Explanation:

1.F=R/2

2.F=30/2

3.15

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