Question

In: Physics

A 4.4 x 10^14 Hz laser emits a 2.1

Expert Solution

Given

frequency of laser beam is f = 4.4 *10¹⁴ Hz

wave length of laser beam is

? = c /f

= ( 3 *10⁸ m/s ) / ( 4.4*10¹⁴ Hz )

= 6.82*10^-7 m

pulse emit by laser is

T = 2.1*10^-6 s

total wave length of the pulse

?' = c /f

= c T

= ( 3*10⁸ m/s ) (2.1*10^-6 s )

= 630 m

number of wave lengths

n = ?' / ?

= 630 / 6.82*10^-7

= 9.237*10⁸

genius_generous answered 6 months ago

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