Electromagnetic Waves
Class 12 · Electromagnetic Waves · Practice

EM Spectrum — Previous-Year Questions

6 previous-year questions on EM Spectrum, drawn from JEE Mains, JEE Advanced, NEET UG, and CUET papers. Every question carries a worked-out explanation.

Q1. The wavelength of a 100 MHz FM radio wave in vacuum is:

JEE 2022

Q2. Which EM band lies between visible and X-rays?

JEE 2021

Q3. A photon of wavelength 200 nm belongs to which band?

JEE 2020

Q4. Which of the following has the SHORTEST wavelength?

JEE 2019

Q5. Which EM band is used in night-vision goggles?

JEE 2018

Q6. Microwave ovens operate at 2.45 GHz primarily because:

JEE 2017

EM Spectrum previous-year questions from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 12 physics practice for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG candidates.