Question

1.5.
A
IC С
A 5
E
F
8 9 10 11
G
12
distance (m)->
The time taken by the wave to travel from A to G is 2 s.
a) What is the amplitude of the wave?
b) What is its wave length?​

Answer 1

Answer:

(a)

Bo=Eo/c=400nT

ω=2πν=3.14×108 rad/s.

k=ω/c=1.05 rad/m

λ=c/ν=6m

(b)

Suppose wave is moving along x-direction, Electric field be along y-direction and magnetic field along the z-direction.

E=Eosin(kx−ωt)j^=120sin(1.05x−3.14×108t)j^

Similarly,

B=4×10−7sin(1.05x−3.14×108t)k^