Answer:
The wave with the frequency of 640 × 10⁹ Hz have 5 × 10⁻⁴ m wavelength.
Explanation:
Given data:
Frequency of wave = 640 × 10⁹ Hz
Wavelength = ?
Solution:
speed of light = 3 × 10⁸ m/s
Formula:
wavelength =Speed of light / frequency
λ = c / f
Now we will put the values in formula.
λ = 3 × 10⁸ m/s / 640 × 10⁹ Hz
Hz = s⁻¹
λ = 3 × 10⁸ m/s / 640 × 10⁹ s⁻¹
λ = 5 × 10⁻⁴ m
The wave with the frequency of 640 × 10⁹ Hz have 5 × 10⁻⁴ m wavelength.
