1.

The direction of electromagnetic wave is in the direction of

Answer»

(A) `(vec(E ))/(vec(B))`
(B) `vec(E )XX vec(B)`
(C) `vec(B)xx vec(E )`
(D) `vec(B)`

SOLUTION :TAKING the direction in consideration in the phenomenon of PROPAGATION of electromagnetic waves, `vec(E )_|_ vec(B)_|_ vec(v)` from the right hand screw rule.
`vec(E )xx vec(B)_|_ vec(v)`
`therefore` It becomes `vec(E )xx vec(B)= vec(v)`


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