Question

explain focal lenth of convex lens​

Answer 1

Answer:

convex lens

Explanation:

IR all shown in the please photo please see and write the answer

Answer 2

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Let AB represent an object at right angles to the principle axis at a distance greater than the focal length f of convex lens . The image A ' B ' is formed beyond 2F² and is real and inverted .

OB = object distance = u

OB' = Image distance = v

OF² = focal length = f

$\frac{1}{f} = \frac{1}{v} = \frac{1}{u}$

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Note :-

See the attached Image