6
QuizMultiple Choice

Using Light — Unit test

Question 6 • FL-2003310-Physical Science - Teacher Directed Resource

The energy of microwaves is less than the energy of ultraviolet light. Which comparison of the energies of electromagnetic waves is correct?

Answer
A
Gamma rays have higher energy than microwaves because gamma rays have shorter wavelengths.
B
Gamma rays have higher energy than microwaves because gamma rays have lower frequencies.
C
Infrared light has lower energy than X-rays because infrared light has shorter wavelengths.
D
Infrared light has lower energy than X-rays because infrared light has higher frequencies.

Explanation

For electromagnetic waves, energy increases with frequency and decreases as wavelength increases. Gamma rays have much shorter wavelengths and higher frequencies than microwaves, so gamma rays have higher energy. Choice B gives the wrong reason: gamma rays do not have lower frequencies than microwaves.

AI-written and checked against the verified answer.

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