Arrange the following electromagnetic waves in the correct increasing order of their frequency:

1.Light waves

2.Microwaves

3.Infrared waves

4.Radio waves

A4, 2, 3, 1 ✓ Correct

B1, 2, 3, 4

C2, 3, 4, 1

D4, 1, 2, 3

Correct answer: (A) 4, 2, 3, 1

Explanation

Radio waves have the lowest frequency and begin the increasing order.

Microwaves have a higher frequency than radio waves.

Infrared waves come next with a still higher frequency.

Light waves, being visible light, have the highest frequency of these four.

The order is Statement 4, Statement 2, Statement 3, Statement 1.

Across the spectrum, higher frequency waves also carry more energy per photon.

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