AIIMS 2014 Physics Electromagnetic Waves MCQ Question
Assertion Static crashes are heard on radio, when lightning flash occurs in the sky. Reason Electromagnetic waves having frequency of radiowave range, interfere with radiowaves.
If both the assertion and reason are true and reason explains the assertion.
If both the assertion and reason are true but reason does not explain the assertion.
If assertion is true but reason false
If assertion is false but reason is true
Correct Answer
Detailed Explanation
The correct answer is A because both the assertion and the reason are true, and the reason effectively explains the assertion. When lightning occurs, it generates electromagnetic waves that include radio frequencies, which can interfere with existing radio waves, causing static crashes to be heard on radios. This interference is a direct consequence of the properties of electromagnetic waves and their interactions.
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