Optics Question 276

Question: The speed of electromagnetic wave in vacuum depends upon the source of radiation

[Kerala PMT 2004]

Options:

A) Increases as we move from g-rays to radio waves

B) Decreases as we move from g-rays to radio waves

C) Is same for all of them

D) None of these

Show Answer

Answer:

Correct Answer: C

Solution:

Speed of EM waves in vacuum = $ \frac{1}{\sqrt{{\mu _{0}}{\in _{0}}}} $ =constant



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