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Grade 12General Physics

Please solve it at earliest. As .y physics board exam is there tomorrow.

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Profile image of himani
6 Years agoGrade 12
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2 Answers

Profile image of Arun
6 Years ago
Dear student
 
Please specify for which question, you want our help. I will be happy to help you.
 
Thanks and regards
Profile image of Vikas TU
6 Years ago
Dear student 
focal length of each part is 2f
effective focal length be F
1/F = 1/2f + 1/2f + 1/2f + 1/2f = 2/f 
F = 2f