.A biconvex lens of focal length 20 cm is cut out into two plano-convex lenses. The focal length of each part is a) 10 cm b) 20 cm c) 30 cm d) 40 cm

Question

Saurabh Koranglekar · Answer

Dear student The focal legth of each part is doubled ie 40cm Regards

Vikas TU · Answer

f = 20 p = 100/f = 5D P1 = P2 = 2.5 D Power of combination = 2.5 + 2.5 = 5D f = 100/5 = 20cm …...................

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.A biconvex lens of focal length 20 cm is cut out into two plano-convex lenses. The focal length of each part is a) 10 cm b) 20 cm c) 30 cm d) 40 cm

.A biconvex lens of focal length 20 cm is cut out into two plano-convex lenses. The focal length of each part is a) 10 cm b) 20 cm c) 30 cm d) 40 cm

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.A biconvex lens of focal length 20 cm is cut out into two plano-convex lenses. The focal length of each part is a) 10 cm b) 20 cm c) 30 cm d) 40 cm

.A biconvex lens of focal length 20 cm is cut out into two plano-convex lenses. The focal length of each part is a) 10 cm b) 20 cm c) 30 cm d) 40 cm

2 Answers

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