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A plane electromagnetic wave having a frequency v = 23.9 GHz propagates along the positive z-direction in free space. The peak value of the Electric Field is 60 V/m. Which among the following is the acceptable magnetic field component in the electromagnetic wave ?

1. → B = 2 × 10 –7 sin(1.5 × 10 2 x + 0.5 × 10 11 t) j ˆ
2. → B = 60 sin(0.5 × 10 3 x + 1.5 × 10 11 t) k ˆ
3. → B = 2 × 10 –7 sin(0.5 × 10 3 z + 1.5 × 10 11 t) i ˆ
4. → B = 2 × 10 –7 sin(0.5 × 10 3 z – 1.5 × 10 11 t) i ˆ CAREER POINT CAREER POINT , CP Tower, IPIA, Road No.1, Kota (Raj.), : 0744-6630500 | www.ecareerpoint.com Email: info@cpil.in Page # 6 JEE Main Online Paper

Correct answer: → B = 2 × 10 –7 sin(0.5 × 10 3 z – 1.5 × 10 11 t) i ˆ CAREER POINT CAREER POINT , CP Tower, IPIA, Road No.1, Kota (Raj.), : 0744-6630500 | www.ecareerpoint.com Email: info@cpil.in Page # 6 JEE Main Online Paper

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