Question

two convex lenses of same focal length are fixed in a PVC pipe at a distance double to their focal length. what happens if a boy sees the moon with that arrangement ​

Answer 1

Answer:

The rays coming from moon are parallel. The first lens converges the rays at focus. 2 The converging point is the focus of second lens. So the second lens convert the diverging rays into parallel. 3 Hence in the rays of moon there will be no change when we see moon with this arrangement or without this arrangement.

Answer 2

Answer:

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