The speed of the light wave in vacuum, c, is 3* 10^8 motors/second. For waves wh

Question

The speed of the light wave in vacuum, c, is 3* 10^8 motors/second. For waves which have wavelength, lambda, of 1.5 meters, find the frequency, f. (Light is not a mechanical wave, but an electromagnetic one. However, it is still a periodic wave and the relationship between wave speed, frequency, wavelength is the same.) A. f = c/lambda = (3 * 10^8 m/s)/(1.5m) = 1.5 * 10^8 s^-1 B. f = lambda/c = (1.5m)/(3 * 10^8 m/s) = 0.5 * 10^-8 s C. f = lambda * c = (1.5m) * (3 * 10^8 m/s) = 4.5 * 10^8 m^2/s D. cannot be determined from information provided

Explanation / Answer

velocity == frequency*wavelength

frequency = velocity/wavelength

f=c/

Plugging given data,

f=(3*10^8m/s)/1.5m

f= 2.0*10^8 s-1

None of the given option is correct.

1st option matches with some part of the answer but its final values is incorrect.

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