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If λm, λx and λm represent the wavelengths of visible light, X-rays and microwaves respectively, then

1. λm > λx > λv
2. λm > λv > λx
3. λv > λx > λm
4. λx > λm > λv

Correct answer: λm > λv > λx

Solution

The wavelength of electromagnetic waves decreases as their frequency increases. Microwaves have the longest wavelength, followed by visible light, and X-rays have the shortest wavelength. Thus, λm > λv > λx.

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