(adsbygoogle = window.adsbygoogle || []).push({}); Inclined mirror problem

Sir,

Please see if it is right.

1)A ray of light makes an angle of 10 degrees with the horizontal and strikes a plane mirror which is inclined at an angle y to the horizontal. What is the angle y for which the reflected ray becomes vertical?

I solved it in the following way:

Given that angle(CBF) = 90, angle(CBD) = 10, angle(DBE) = angle(EBF) = m

i.e. 2m + 10 = 90

m = 40

Now, y + 10 + 40 = 90

y = 40

Is it right?

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# Homework Help: Two inclined mirrors problem

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