The magnetic field in a plane electromagnetic wave is given by $B = 3 × 10^{-7}\sin(1.5x + 5 × 10^8t) T$, where x is in meter and t is in second. The wavelength of the wave is: (Take: $π = 3$) |
1.5 m 3 m 4 m 2.5 m |
4 m |
The correct answer is Option (3) → 4 m |