Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Waves

Question:

A plane electromagnetic wave of frequency 30 MHz travels in free space along the x-direction. At a particular point in space and time $\vec E = 6.3\hat j\, V/m$. The $\vec B$ at this point would be:

Options:

$2.1 × 10^{-8}\hat k\, T$

$2.1 × 10^{-6}\hat j\,T$

$1.6 × 10^{-8}\hat i\, T$

$2.6 × 10^{-8}\hat j\,T$

Correct Answer:

$2.1 × 10^{-8}\hat k\, T$

Explanation:

The correct answer is Option (1) → $2.1 × 10^{-8}\hat k\, T$