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Two convex lenses of focal length 25 cm and 20cm are seperated by a distance "d". If a parallel beam enter in one lens comes out as parallel beam from another then find the distance "d" and also draw a ray diagram.

Two convex lenses of focal length 25 cm and 20cm are seperated by a distance "d". If a parallel beam enter in one lens comes out as parallel beam from another then find the distance "d" and also draw a ray diagram.

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1 Answers

Chetan Mandayam Nayakar
312 Points
12 years ago

it is quite easy to see that d = 25 +20 =45cm

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