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Question

Choose the correct answer from the alternatives given.
Which of the following is not true for electromagnetic waves?


A
They transport energy.
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B
They have momentum.
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C
They travel at different speeds in air depending on their frequency.
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D
They travel at different speeds in medium depending on their frequency.
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Solution

The correct option is C They travel at different speeds in air depending on their frequency.
They travel at different speed in air depending on their frequency. At constant as the speed will be same irrespective of frequency. Also frequency is source dependent and doesn't controls speed.

Physics

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