Physics-Maxwell's Equations
NEET Physics Maxwell's Equations MCQ Question
Type: MCQ-numerical-Medium-Class 12
An electromagnetic wave travels in vacuum with a frequency of 15 MHz. What is its wavelength?
A
20 m
B
2 m
C
200 m
D
0.2 m
Correct Answer
Option A
Detailed Explanation
Using the relation νλ = c, where c is the speed of light in vacuum (3 × 10^8 m/s), we find λ = c/ν = (3 × 10^8 m/s) / (15 × 10^6 Hz) = 20 m.
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