Electromagnetic Waves and Wave Optics: EM Spectrum — Order MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow

EM Spectrum — OrderEasyQuestion 20184

Question

In order of increasing frequency, the correct sequence of EM waves is:

A
Gamma, X-ray, UV, Visible, IR, Microwave, Radio
B
Radio, Microwave, IR, Visible, UV, X-ray, Gamma
Correct
C
Visible, UV, IR, X-ray, Microwave, Radio, Gamma
D
X-ray, Gamma, UV, Visible, IR, Microwave, Radio

Correct answer

Radio, Microwave, IR, Visible, UV, X-ray, Gamma

Explanation

Frequency increases: Radio (kHz–GHz) < Microwave (GHz) < Infrared (THz) < Visible (400–700 nm) < UV < X-ray < Gamma ray (>10¹⁹ Hz). Wavelength decreases in the same order.

Review Electromagnetic Waves and Wave Optics notes Start timed chapter practice