Back to Practice
Physics-EM Spectrum

NEET Physics EM Spectrum MCQ Question

Type: MCQ-numerical-Medium-Class 12

What is the wavelength of an electromagnetic wave traveling in vacuum with a frequency of 30 MHz?

A

10 m

B

1 m

C

0.1 m

D

100 m

Correct Answer

Option A

Detailed Explanation

The wavelength λ\lambda of an electromagnetic wave is given by λ=cf\lambda = \frac{c}{f}, where cc is the speed of light in vacuum (3×108 m/s3 \times 10^8 \text{ m/s}) and ff is the frequency. For f=30 MHz=30×106 Hzf = 30 \text{ MHz} = 30 \times 10^6 \text{ Hz}, λ=3×108 m/s30×106 Hz=10 m\lambda = \frac{3 \times 10^8 \text{ m/s}}{30 \times 10^6 \text{ Hz}} = 10 \text{ m}.

Found an issue with this question?

Related Questions

Explore More Questions

All Physics QuestionsElectromagnetic Waves Questions