NEET Physics Properties of EM Waves MCQ Question
Which of the following combinations about the properties of electromagnetic waves is correct?
Electromagnetic waves travel at different speeds in different media; all types can interact with matter in unique ways.
All electromagnetic waves have the same wavelength; their interaction with matter is solely dependent on their frequency.
Accelerated charges produce electromagnetic waves; the wavelength is related to the size of the radiating system.
Gamma rays are produced by accelerating electrons; radio waves are emitted from atomic nuclei.
Correct Answer
Detailed Explanation
Statement C is correct as accelerated charges do produce electromagnetic waves, and their wavelength is correlated with the size of the system that radiates them. Statement A is incorrect because while EM waves can travel at different speeds in different media, they all travel at the same speed in a vacuum. Statement B is false since electromagnetic waves differ in wavelength and frequency, affecting their interactions with matter. Statement D is incorrect as gamma rays originate from nuclear reactions, not from accelerating electrons.
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