Radiation And Heat Practice Test

Arrange in order of increasing frequency for gamma rays, microwaves, visible light, and X-rays.

Gamma rays, X-rays, Visible light, Microwaves Microwaves, Visible light, X-rays, Gamma rays Visible light, Gamma rays, Microwaves, X-rays X-rays, Microwaves, Gamma rays, Visible light

Correct Answer:

Microwaves, Visible light, X-rays, Gamma rays

Explanation:

Frequency in the electromagnetic spectrum increases from microwaves up through visible light, then X-rays, and finally gamma rays. Since energy per photon scales with frequency (E = h f), higher frequency means higher energy. Among these four, microwaves have the lowest frequency, visible light is higher, X-rays higher still, and gamma rays the highest. So the increasing-frequency sequence is microwaves, visible light, X-rays, gamma rays.

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