Green light has a wavelength of 0.00000052 meters. Speed of light is 300,000,000 m/s. What is the frequency of green light waves and what is the period?

1 Answer
May 9, 2018

Frequency #color(blue)(5.77x10^5 \ \GHz#

Period #color(blue)(1.733xx10^(-15) \ \s#

Explanation:

#"wave speed"="frequency"xx"wavelength"#

#v=fxxlambda#

#:.#

#f=v/lambda#

We have:

#v=3xx10^8#

#lambda=5.2xx10^(-7)#

#f=(3xx10^8)/(5.2xx10^(-7))=5.77xx10^(14) \ \Hz=5.77x10^5 \ \GHz#

The period is the reciprocal of the frequency:

#T=1/f=1/(5.77xx10^(14))=1.733xx10^(-15) \ \s#