English, asked by anish1980, 1 year ago

defination of focal length​

Answers

Answered by NaishaSingh
4

Answer:

THE DISTANCE BETWEEN POLE AND PRINCIPAL FOCUS OF A SPHERICAL MIRROR IS CALLED ITS FOCAL LENGTH. IT IS REPRESENTED by f.

Answered by pranitha675
0

Explanation:

The distance between pole to principal axis is called as focal length

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