JEE Mains · Physics · STD 12 - 8. Electromagnetic waves
A plane electromagnetic wave with frequency of \(30 {MHz}\) travels in free space. At particular point in space and time, electric field is \(6 {V} / {m}\). The magnetic field at this point will be \({x} \times 10^{-8} {T}\). The value of \({x}\) is ..... .
- A \(1\)
- B \(2\)
- C \(4\)
- D \(20\)
Answer & Solution
Correct Answer
(B) \(2\)
Step-by-step Solution
Detailed explanation
\(|B|=\frac{|E|}{C}=\frac{6}{3 \times 10^{8}}\) \(=2 \times 10^{-8} {T}\) \(\therefore x=2\)
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