Question

What is the 'focal length of a :

(a) concave mirror (b) convex lens​

Answer 1

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FOCAL LENGTH:

• DISTANCE BETWEEN POLE AND FOCUS POINT
• IT'S BEING MEASURED FROM POLE

POINTS:

• FOCAL LENGTH FOR CONCAVE AND CONVEX MIRROR IS SAME(DISTANCE FROM POLE TO FOCUS)
• DEFINITION OF FOCUS: It is a point onto which collimated light parallel to the axis is focused.
• FOCAL LENGTH IS ALWAYS MEASURED FR POLE OF MIRROR.

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Answer 2

Answer:

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