In electromagnetic waves travelling in vacuum (i) The electric field E is always perpendicular to the magnetic field B (ii) The cross product E × B always gives the direction in which the waves travel. (iii) The field E and B vary sinusoidally (iv) There is a phase difference of (π/2) between E and B The correct statement (s) is (are)

Question

In electromagnetic waves travelling in vacuum (i) The electric field E is always perpendicular to the magnetic field B (ii) The cross product E × B always gives the direction in which the waves travel. (iii) The field E and B vary sinusoidally (iv) There is a phase difference of (π/2) between E and B The correct statement (s) is (are) (A) (i), (iii) (B) (i), (iii), (iv) (C) (i), (ii), (iii), (iv) (D) (i), (ii), (iii)

Tardigrade Admin · Accepted Answer

Electromagnetic wave is a wave in which electric field vector and magnetic field vector are perpendicular to each other and also they are in same phase

E \times B

always give the direction in which wave travel. The direction of

E \times B

is also perpendicular to both

E

and

B

(i), (iii)

(i), (iii), (iv)

(i), (ii), (iii), (iv)

(i), (ii), (iii)

Electromagnetic wave is a wave in which electric field vector and magnetic field vector are perpendicular to each other and also they are in same phase E×B always give the direction in which wave travel. The direction of E×B is also perpendicular to both E and B

Electromagnetic wave is a wave in which electric field vector and magnetic field vector are perpendicular to each other and also they are in same phase
$E \times B$ always give the direction in which wave travel. The direction of $E \times B$ is also perpendicular to both $E$ and $B$