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What shortcoming does Huygens' model have?

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Question

What shortcoming does Huygens' model have?

Options

  • It makes the wavefront move only towards the source.

  • It also gives a backwave.

  • It cannot describe a plane wave.

  • It cannot give a spherical wavefront.

MCQ
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Solution

The model's shortcoming is that its construction also gives a backwave. This requires an explanation for the absence of the backwave.

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