CBSE BOARD X, asked by dsnsir, 10 months ago

If two lenses power 25D and -20D are placed coaxially in contact with each other, the effective focal length is

Answers

Answered by kulkarninishant346

12

Answer:

75m×50m ans is correct

Answered by Sakshi3090

3

Answer:

75m×50m is your answer

Explanation:

HOPE this HELPS you friend ❤

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