This question has Statement-1 and Statement-2. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement-1: Out of radio waves and microwaves, the radio waves undergo more diffraction. Statement-2: Radio waves have greater frequency compared to microwaves. (a) Statement-1 is true, Statement-2 is true and Statement-2 is the correct explanation of Statement-1 (b) Statement-1 is false, Statement-2 is true. (c) Statement-1 is true, Statement-2 is false. (d) Statement-1 is true, Statement-2 is true but Statement-2 is not the correct explanation of Statement-1

Answer: (c). Diffraction is significant when λ is comparable to obstacle size; radio waves have longer λ than microwaves, so they diffract more: Statement-1 true. Radio waves have lower frequency than microwaves: Statement-2 false. So the answer is (c).

This question has Statement-1 and Statement-2. Of the four choices… | JEE Main 2013 (25 Apr, Shift 1)

Q32JEE Main 2013 · 25 APR · SHIFT 1Medium

Electromagnetic Spectrum & Atmosphere

This question has Statement-1 and Statement-2. Of the four choices given after the Statements, choose the one that best describes the two Statements.

Statement-1: Out of radio waves and microwaves, the radio waves undergo more diffraction. Statement-2: Radio waves have greater frequency compared to microwaves.

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Answer: (c)

Diffraction is significant when $\lambda$ is comparable to obstacle size; radio waves have longer $\lambda$ than microwaves, so they diffract more: Statement-1 true.
Radio waves have lower frequency than microwaves: Statement-2 false.
So the answer is (c).

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Electromagnetic Spectrum & Atmosphere question from JEE Main 2013 (25 Apr, Shift 1)

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