Physics, asked by akhilesh280320062, 1 month ago

a convexo concave lens has radii R1=15Cm and R2=10cm find focal length

Answers

Answered by vandanachaurasiya112

0

Answer:

Focal lenth of convex lens

R = f/2

f = R ×2

f = 15×2

f = 30 cm

focal length of concave lens

R = f/2

f = R ×2

f = 10×2

f = 20 cm

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