Physics-EM Spectrum
NEET Physics EM Spectrum MCQ Question
Type: MCQ-numerical-Hard-Class 12
What is the wavelength of an electromagnetic wave traveling in vacuum with a frequency of 30 MHz?
A
10 m
B
30 m
C
300 m
D
0.1 m
Correct Answer
Option A
Detailed Explanation
The speed of light in vacuum is 3 × 10^8 m/s. Using the relation c = λν, where λ is the wavelength and ν is the frequency, λ = c/ν = (3 × 10^8 m/s) / (30 × 10^6 Hz) = 10 m.
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