How many cycles of wave are in the pulse

Reference no: EM13260855

A laser pulse has a duration of 4.00× 10?11 s and a frequency of 6.40× 1014 Hz.

(a) How many cycles of wave are in the pulse?

(b) If the same pulse enters water (n=1.33), what is the length of the pulse?

Reference no: EM13260855

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