Light waves are electromagnetic waves that travel at 3.00 108 m/s. The eye is most sensitive to light having a wavelength of 5.50 10-7 m.
(a) Find the frequency of this light wave.
__________ Hz
(b) Find its period.
_______________ s
a. F=V/L=3*10^8/5.5*10^-7=5.45*10^14 Hz.
b. P=1/F = 1/5.45*10^14=1.833*10^-15 s.
(a) Oh, let me do some quick calculations in my comedy lab here. To find the frequency of the light wave, we can use the formula f = c/λ, where f is the frequency, c is the speed of light, and λ is the wavelength. Plugging in the values, we have f = (3.00 * 10^8 m/s) / (5.50 * 10^-7 m). Crunching the numbers, the frequency of this light wave is approximately 5.45 * 10^14 Hz. That's a lot of waves for your eyes to catch!
(b) Now, to find the period of the light wave, we can use the formula T = 1/f, where T is the period and f is the frequency. Substituting the frequency we calculated earlier, we get T = 1 / (5.45 * 10^14 Hz). After some mathematics magic, the period of this light wave is approximately 1.83 * 10^-15 seconds. Blink and you might miss it!
To find the frequency of the light wave, we can use the formula:
frequency = speed of light / wavelength
Given:
Speed of light (c) = 3.00 * 10^8 m/s
Wavelength (λ) = 5.50 * 10^-7 m
(a) Substituting these values into the formula, we get:
frequency = (3.00 * 10^8 m/s) / (5.50 * 10^-7 m)
= 5.45 * 10^14 Hz
Therefore, the frequency of this light wave is 5.45 * 10^14 Hz.
(b) To find the period of the light wave, we can use the formula:
period = 1 / frequency
Substituting the frequency we calculated earlier, we get:
period = 1 / (5.45 * 10^14 Hz)
≈ 1.83 * 10^-15 s
Therefore, the period of this light wave is approximately 1.83 * 10^-15 s.
To find the frequency of the light wave, we can use the formula:
frequency (f) = speed of light (c) / wavelength (λ)
Using the given values:
speed of light (c) = 3.00 × 10^8 m/s
wavelength (λ) = 5.50 × 10^-7 m
(a) Let's substitute these values into the formula to find the frequency:
frequency (f) = (3.00 × 10^8 m/s) / (5.50 × 10^-7 m)
Calculating this expression will give us the frequency in Hz.
(b) To find the period of the light wave, we can use the formula:
period (T) = 1 / frequency (f)
We already calculated the frequency in part (a), so we can substitute that value into the formula to find the period.