HC Verma - Concepts of Physics Part 1

Book: HC Verma - Concepts of Physics Part 1

Chapter: 18. Geometrical Optics

Subject: Physics - Class 11th

Q. No. 13 of Short Answer

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13

A single lens is mounted in a tube. A parallel beam enters the tube and emerges out of the tube as a divergent beam. Can you say with certainty that there is a diverging lens in the tube?

Of course, we can say. Only reflection of light does not create divergence, it needs refractive index changes to diverge. Hence, there certainly is a diverging lens.


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