Optics Question 616

Question: Two thin lenses of focal lengths f1 and f2 are in contact and coaxial. The combination is equivalent to a single lens of power

[MP PET 1996, 98; MP PMT 1998; DCE 2000; UP SEAT 2005]

Options:

A) f1+f2

B) f1f2f1+f2

C) 12(f1+f2)

D) f1+f2f1f2

Show Answer

Answer:

Correct Answer: D

Solution:

P=1F=f1+f2f1f2



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