Question

a wave of infrared light has a speed of 6 m/s and a wavelength of 12 m. what is the frequency of this wave?

Answer 1

Note:

v = fλ

6 m/s = f * 12m

f = 6/12

f = 0.50 s⁻¹

f = 0.50 Hertz.

Note this was solved just for solving of it, infrared light is an electromagnetic wave and its speed cannot be 6m/s.

All electromagnetic wave infrared light inclusive would have a speed of ≈ 3 * 10⁸ m/s.

Answer 2

Answer: The frequency of the wave is 0.5 Hz

Explanation:

Wave speed is defined as the product of its wavelength and frequency.

Mathematically,

$\text{Wave speed}=\lambda\times \nu$

where,

Wave speed of the wave = 6 m/s

$\lambda$ = wavelength of the wave = 12 m

$\nu$ = frequency of the wave

Putting values in above equation, we get:

$6m/s=12m\times \nu\\\\\nu=\frac{6m/s}{12m}=0.5s^{-1}=0.5Hz$

Hence, the frequency of the wave is 0.5 Hz