Multiple choice

Consider the following electromagnetic waves:

  1. X-rays 2. م-rays
  2. Microwaves 4. Radio waves What is the correct sequence in the order of their increasing energy?

  1. 4, 3, 1, 2

  2. 1, 3, 2, 4

  3. 4, 2, 1, 3

  4. 1, 4, 3, 2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Electromagnetic waves are arranged in order of increasing energy (or frequency): Radio waves (lowest energy), Microwaves, X-rays, and γ-rays (gamma rays, highest energy). The sequence 4 (radio), 3 (microwaves), 1 (X-rays), 2 (γ-rays) represents increasing energy levels. Energy is directly proportional to frequency (E = hf) and inversely proportional to wavelength.

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