Biology, asked by pankajganorkar1168, 4 days ago

a convex lens and a concave lens each of focal length 25 cm and 20cm respectively are placed in close contact rhe combination of lenses

Answers

Answered by devindersaroha43

1

Answer:

Explanation:

Focal length of convex lens f1 =25 cm Focal length of concave lens f2 = - 25 cm Power of combination in dioptres

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