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Electromagnetic Waves question

2023 · 12 Apr · Shift 1 · Q47

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JEE Main
Physics
Electromagnetic Waves
2023 · 12 Apr · Shift 1 · Q47

Electromagnetic Waves question

2023 · 12 Apr · Shift 1 · Q47

JEE MainPhysicsElectromagnetic WavesMCQ+4 / −1

Given below are two statements: one is labelled as Assertion

\mathbf{A}

and the other is labelled as Reason

\mathbf{R}

Assertion A : EM waves used for optical communication have longer wavelengths than that of microwave, employed in Radar technology. Reason R : Infrared EM waves are more energetic than microwaves, (used in Radar) In the light of given statements, choose the correct answer from the options given below.

A
Both $\mathrm{A}$ and $\mathrm{R}$ are true but $\mathrm{R}$ is NOT the correct explanation of $\mathrm{A}$
B
$\mathrm{A}$ is true but $\mathrm{R}$ is false
C
Both $\mathrm{A}$ and $\mathrm{R}$ are true and $\mathrm{r}$ is the correct explanation of $\mathrm{A}$
D
$\mathrm{A}$ is false but $\mathrm{R}$ is true

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