Physics, asked by aishaaisu, 4 months ago

The focal length of a convex mirror is 20 cm and a convex mirror is 30 cm. what is its effective focal length

Answers

Answered by Anonymous

1

Answer:

25. I think the correct answer is thi

Answered by alamannoushad

1

1/f = 1/20- 1/30

f = 60 cm

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