The laser in an audio compact disc player uses light with a wavelength of 7.80x10^2 nm. What is the frequency? - best compact audio player
The wavelength is the wave velocity (in this case, the speed of light) of frequency. Divide the speed of light by the wavelength (making sure to use the same units of length) for the frequency.
Friday, January 29, 2010
Best Compact Audio Player The Laser In An Audio Compact Disc Player Uses Light With A Wavelength Of 7.80x10^2 Nm. What Is The Frequency?
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1 comments:
Nano is 10 ^ -9 m
nm 7.80x10 ^ 2 M = (7.80x10 ^ 2) x 10 ^ -9
the wavelength λ, lambda
v = fλ
f = v / λ
f = 3.00 x 10 ^ 8 x (7.80x10 ^ 2) x 10 ^ -9
f = 0.0234 Hz
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