Question

the focal length of a convex mirror is 12.5cm.how far is its centre of curvature (i) from the pole (ii) from the focus

Answer 1

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Answer 2

Question:-

• The focal length of a convex mirror is 12.5cm How far is its centre of curvature from the pole of the mirror and focus of mirror.

To Find:-

• How far is its centre of curvature from the pole of the mirror and focus of mirror.

Solution:-

Given ,

• The focal length of the convex mirror is 12.5 cm.

First ,

We have to find the centre of curvature from the pole of the mirror:-

$\dashrightarrow\sf \: R = 2 \times f$

$\dashrightarrow\sf \: R = 2 \times 12.5$

$\dashrightarrow\sf \: R = 25 \: cm$

Now ,

We have to find the focus of the mirror:-

$\dashrightarrow\sf \: Focus \: of \: mirror = focal \: length$

$\dashrightarrow\sf \: Focus \: of \: mirror = 12.5 \: cm$

Hence,

• Focus of the mirror is 12.5 cm