EMW

Question 1

properties of emw

Answer 1

1. direction of wave propogation will be in the dorection of E cross B
2. E, B and direction of propogation will be mutually perpendicular

Question 2

1. peak value of E and B
2. W =
3. Erms =
4. Brms =
5. K =
6. k =
7. V =
8. V =
9. wave velocity =

Answer 2

1. Eo Bo
2. W = angular frequency
3. Erms = Eo/ root 2
4. Brms = Bo / root2
5. K = wave propogation constant
6. k = 2pie/ lemda
7. V = n lemda
8. V = W/K
9. wave velocity = V

Question 3

how does EMW trvael in vaccum

Answer 3

travels with speed of light
c = 1/ root mew naught e naught
LT inverse

Question 4

emw in medium speed ?

Answer 4

v = c/ RI
RI = root mewr Er

Question 5

wht happens to speed in medium

Answer 5

it decreases

Question 6

relation bw E and B
1. in vacum
2. in medium

Answer 6

1. E = BC
2. E= BV

Question 7

1. energy density of EMW
2. average enrgy density of EMW

Answer 7

1. 1/2 EoE^2 + 1/2 B^2/mew naught
2. 1/2 EoE^2 = 1/2 B^2/mew naught
   1/4 EoEo^2 + 1/4 Bo^2/mew naught