1.

Two electromagnetic waves create (0, 0, 1) Vm and (-1,0,1) Vm^(-1) displacement at one point any instance. So resultant intensity at this point will be...... Wm^(-2)

Answer»

`sqrt(5)`
17
1
5

Solution :`VECE= vece_(1)+ vece_(2)`
`=(0,0,1)+(-1,0,1)`
`=(-1,0,2)`
`:.E^(2)=(-1)^(2)+(0)^(2)+(2)^(2)=1++4=5and I prop d`
`:.I= KE^(2)`
`:.I=1xx5`
`:.I=5 Wm^(-2)`


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