Q25 / 30 · NTA Abhyas (NEET) 2020 · Physics · Electromagnetic Waves

Frequencies of various radiations are given as
$f_{v} \to$ Visible light
$f_{r} \to$ Radio waves
$f_{u v} \to$ Ultra Violet waves
Then which of the following is true?

A
$f_{u v} < f_{v} < f_{r}$
Correct answer
B
$f_{r} < f_{v} < f_{u v}$
C
$f_{v} < f_{r} < f_{u v}$
D
$f_{u v} < f_{r} < f_{v}$

Solution

λ_{u v} < λ_{v} < λ_{r}

f_{u v} > f_{v} > f_{r}

Hence, the correct answer is option: 'B'.

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