A light beam is reflected off the edge of an optic fibre at an angle of 0.0042o . The diameter of the fibre is 69 µm. Find the equation of the reflected beam with the -axis (at the centre of the fibre) and the yaxis as shown?

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1 Answer
A08
May 11, 2018

Slope of the line is given as

#m=tan(180-0.0042)#
#=>m=-7.33xx10^-5#

Intercept on #y#-axis is #c=34.5\ mum#

Writing equation of line in slope-intercept form

#y=mx+c#
#=>y=-7.33xx10^-5x+34.5#
(For #x>=0#, Measurements in #mum#)

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