* Calculate the frequency of yellow light of wavelength 5500 A. The speed of light is 3 X 108 ms-1 ?
* The frequency range of visible light is from 3.75 X 1014 Hz to 7.5 X 1014 Hz. Calculate its wavelength range. Take speed of light = 3 X 108 ms-1.
Answers
Answered by
3
1.
f = c/λ
= (3 * 10^8 m/s) / (5500 * 10^-10)
= 5.45 * 10^14 Hz
__________________
2.
λ1 = c / f
= (3 * 10^8 / (3.75 * 10^14))
= 8 * 10^-7 m
= 800 nm
λ2 = c / f’
= (3 * 10^8 / (7.5 * 10^14))
= 4 * 10^-7 m
= 400 nm
Wavelength range = 800 nm to 400 nm
f = c/λ
= (3 * 10^8 m/s) / (5500 * 10^-10)
= 5.45 * 10^14 Hz
__________________
2.
λ1 = c / f
= (3 * 10^8 / (3.75 * 10^14))
= 8 * 10^-7 m
= 800 nm
λ2 = c / f’
= (3 * 10^8 / (7.5 * 10^14))
= 4 * 10^-7 m
= 400 nm
Wavelength range = 800 nm to 400 nm
Similar questions