Answer: 4.2817 × 10^14 s^-1
Explanation:
The term "wave speed" is described as the distance covered by a wave in specific time duration. The wave speed (v) can be mathematically expressed as:
v=fλ
Where;
F= frequency which is the number of waves that pass a fixed point per unit time and it is also the number of cycles or vibrations undergone during pet unit of time by a body in periodic motion
λ= wavelength which is the distance between successive crests of a wave.
Given the data,
Wavelength λ= 7×10^-7m
Speed of light c= 2.99792 × 10^8 m/s
Frequency of visible light can be given as:
Frequency= speed of light/wavelength
Frequency = (2.99792 × 10^8 m/s) / (7×10^-7m)
Frequency= 4.2817 × 10^14 s^-1
Therefore, the frequency of the light wave is 4.2817 × 10^14 s^-1
