Question

a convergent lens power 10D.what will be the focal length of this lens?
please help​

Answer 1

Answer:

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Explanation:

A convergent lens of focal length 8cm combined with a diverging lens of power -10D. Calculate the focal length of the combination. Given, focal length of the convergent lens (convex lens) = f = 8cm = 0.08m. Hence, the focal length of the combination will be 40 c m

Answer 2

Answer:

0.1 cm.

Explanation:

P = 1/ f

or, f = 1/P = 1/10 = 0.1 cm