the speed of light is 3*10^8 m/s. Red light has a wavelength of 7 * 10^-7 m. What is its frequency?
To find the frequency of red light, we can use the formula:
Speed of light = Wavelength x Frequency
Given that the speed of light is 3 x 10^8 m/s and the wavelength of red light is 7 x 10^-7 m, we can rearrange the formula to solve for frequency:
Frequency = Speed of light / Wavelength
Plugging in the values:
Frequency = (3 x 10^8 m/s) / (7 x 10^-7 m)
To simplify this calculation, we can rewrite the values in scientific notation:
Frequency = (3 / 7) x (10^8 / 10^-7)
Now, let's perform the calculations:
Frequency = 4.2857 x (10^8 + 7)
Frequency ≈ 4.2857 x 10^8
Therefore, the frequency of red light is approximately 4.2857 x 10^8 Hz.
f*wavelength=speed
calculate f