The electric field associated with an electromagnetic wave in vacuum is given by E = 40cos(kz - 6 × 10⁸t) V/m, where E, z and t are in volt per metre, metre and second respectively. The value of wave vector k is
A
2 m⁻¹
B
0.5 m⁻¹
C
6 m⁻¹
D
3 m⁻¹

Question

The electric field associated with an electromagnetic wave in vacuum is given by E = 40cos(kz - 6 × 10⁸t) V/m, where E, z and t are in volt per metre, metre and second respectively. The value of wave vector k is

A

2 m⁻¹

B

0.5 m⁻¹

C

6 m⁻¹

D

3 m⁻¹

Accepted Answer

2 m⁻¹

Answer

0.5 m⁻¹

Answer

6 m⁻¹

Answer

3 m⁻¹

STANDARD Physics Wave Vector MCQ Question

Correct Answer

Detailed Explanation

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