Question

The distance between Pole and radius
of curvature is 30 cm, then the focal
length is​

Answer 1

Answer:⏩⏩When we the object to form at infinitythan it should be placed at focus. Here ,since the radius of curvature in 30 cm. Therefore the the distance between thepole of the mirror and the focus i.e Focal length will be 15 cm as F=1/R.

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Answer 2

AnsWer :

15 cm.

Given :

• Center of curvature = 30 cm.

To Find :

Focal length.

Solution :

We have formula,

$\tt\fbox{ \huge{f = \frac{C}{2}} }$

here,

• f focal length.
• c center of curvature.

$\tt\longmapsto f = \frac{30}{2}$

$\tt\longmapsto f = 15 \: cm.$

Therefore, the value of Focal length be 15 cm.