Question

what is the value of the quantity w/k in vaccum for electromagnetic waves
​

Answer 1

Answer:

All electromagnetic waves travel at the same speed through empty space. That speed, called the speed of light, is about 300 million meters per second (3.0 x 108 m/s).

Answer 2

The quantity that is independent of the wavelength. The angular frequency ω is given by:

ω=2πν The frequency of a wave varies with the wavelength. So, angular frequency is dependent on wavelength. The quantity k is defined as the wavenumber and it is given by:

k= w2π

It shows that k is dependent on wavelength.

The value of

ωk

can be obtained as:

ω

k

=

2πν

2π/λ

⟹

νλ

1

=

c

1

(∵c=νλ)

where c is the speed of electromagnetic wave in vacuum. It is a constant whose value is 3×10

8

ms

−1

.