Question

The angle between incident ray and reflected ray is 70° . What will be the incident angle be?​

Answer 1

Explanation:

As we know laws of reflection

incident ray =reflected ray

i=r

assume i and e as x

i+e=70

x+x=70

2x=70

x=35

therefore incident ray is 35degree.

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Answer 2

Answer:

35°

Explanation:

Given

angle between i(incident ray) and r(reflected ray)=70°

we know °of i and °of r are always equal

so

i+r = 70

since i=r (or r=i)

i+i =70°

2i = 70°

i = 70°/2

i= 35°