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A light wave when enters a denser medium its intensity decreases. It is bcoz the wave is absorbed by the molecules of the medium which again re emit and in this process some of the energy is lost. But frequency of the wave remains unchanged when a wave is travelling from rearer to denser medium. According to Max Plank’s equation E=Hf. So energy shouldn’t change. Which of the above reasoning is wrong and why?

A light wave when enters a denser medium its intensity decreases. It is bcoz the wave is absorbed by the molecules of the medium which again re emit and in this process some of the energy is lost.
But frequency of the wave remains unchanged when a wave is travelling from rearer to denser medium. According to Max Plank’s equation E=Hf. So energy shouldn’t change.
Which of the above reasoning is wrong and why?

Grade:12th pass

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
Dear student

To know the exact wordings and the question in entirety kindly attach an image of the question

Regards

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