STANDARDPhysics-Electromagnetic Waves
STANDARD Physics Wave Propagation MCQ Question
Type: MCQ-numerical-Medium-Class 12
A plane electromagnetic wave of frequency 25 MHz travels in free space along x-direction. At a particular point in space and time, electric field E = 6.3 V m⁻¹. The magnitude of magnetic field B at this point is
A
1.2 × 10⁻⁶ T
B
1.2 × 10⁻⁸ T
C
2.1 × 10⁻⁶ T
D
2.1 × 10⁻⁸ T
Correct Answer
Option D
Detailed Explanation
As B = E/c = 6.3/3 × 10⁸ = 2.1 × 10⁻⁸ T.
Found an issue with this question?
Related Questions
More from Electromagnetic Waves
More from
Which of the following types of electromagnetic waves was discovered last by the end of the nineteenth century?
EM SpectrumPhysics
Which of the following statements about the displacement current and magnetic fields in electromagnetic waves are correct?
(general)Physics
Which of the following types of electromagnetic waves has the longest wavelength?
EM SpectrumPhysics