Question

what is the angle of incidence of a ray of the reflected ray is at an angle of 70° to the incident ray​

Answer 1

Answer:

Angle of incidence=Angle of refraction

As said they are equal. Therefore, Angle of incident = 70/2 = 35 degrees.

Explanation:

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Answer 2

Answer:

The angle of incidence is  $35^{0}$.

Explanation:

• Reflection of light follows the rule that the angle of incidence is equal to the angle of reflection.
• Normal, reflected ray and incident ray are coplanar.

The formula followed by the reflection of light:

The angle of the incident ray with normal $=$ angle of the reflected ray with normal.

∠i = ∠r

Step 1:

It is given that reflected ray makes $70$ degrees angle with incident ray.

So, as incident angle and reflected angle are equal.

Angle of incidence $= \frac{70^{0} }{2}$

Step 2:

Therefore, the angle of incidence $= 35^{0}$.