Question

a ray of light is incident on a plane mirror at an angle if incidence 30 the deviation produced by mirror is p*30 find value of p​

Answer 1

Answer:

Since angle of incident =angle of reflection

Hence r=30°

And here angle of deviation,

δ=180°−(i+r)

δ=120°

Now,p*30°=120°

So, p=120/30

therefore p=4

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