Question

What is meant by power of a lens? You have three lenses L1, L2 and L3 of powers 12D, 4D and -15D respectively. State the nature and focal length of each lens. Explain which of the three lenses will form a virtual and magnified image of an object placed at 10 cm from the lens. Draw the ray diagram in support of your answer.

Answer 1

Answer:

f will be less than f1 Explanation 1f = 1F1 + 1F2 1f1 = 1F1 + 1F2 - dF1F2 where d is t..he distance between lenses.

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