Question

for a given incident ray a plane mirror turn through 15 degree the reflected return through​

Answer 1

Answer:

The reflected beam will return through 30°.

Explanation:

This is a factual question.

When a plane mirror is rotated by an angle θ, then the reflected beam suffers a deviation of 2θ. A beam of light incident on the surface of the plane mirror that is reflected back is called a reflected beam.

So, from the question we have,

θ=15°

And 2θ will be,

2θ=2×15°=30°

Hence, the reflected beam will return through 30°.