Question
The electric field in a plane electromagnetic wave is given by E_z=60 (5 x +1.5 10^9 t ) V / m . Then expression for the corresponding magnetic field is (here subscripts denote the direction of the field) :
NEET
Physics
Electromagnetic Waves
2025
NEET 2025
NEET Physics Question (2025) — Solution
Options
- A. B_y=2 10^ -7 (5 x+1.5 10^9 t ) T
- B. B_x=2 10^ -7 (5 x+1.5 10^9 t ) T
- C. B_z=60 (5 x+1.5 10^9 t ) T
- D. B_y=60 (5 x+1.5 10^9 t ) T
Answer
A. B_y=2 10^ -7 (5 x+1.5 10^9 t ) T
Step-by-step solution
aligned & v = k = 1.5 10^9 5 =3 10^8 ~m / s \\ & B _0= F _0 v = 60 3 10^8 =20 10^ -8 =2 10^ -7 ~T aligned B _ y =2 10^ -7 (5 x +1.5 10^9 t ) T
Related: Physics — Electromagnetic Waves · All PYQ Banks