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vivado [14]
3 years ago
14

Two adjoining plane mirrors are separated by an angle of 100°. Light is incident on the first mirror at an angle of 70°. The lig

ht reflects toward the second mirror and is then reflected from it. At what angle is the light reflected from the second mirror?

Physics
2 answers:
Ludmilka [50]3 years ago
8 0

Answer:

The angle is the light reflected from the second mirror is 30°

Explanation:

Given that,

Angle between mirrors = 100°

Angle of incident = 70°

We know that,

The incident angle is equal to the reflected angle.

We need to calculate the angle BCA

According to figure,

In \Delta ABC,

\angle ABC+\angle BCA+\angle C=180

Put the value into the formula

20+100+\angle BCA=180

\angle BCA = 60

We need to calculate the angle is the light reflected from the second mirror

Using relation of incident and reflection

i+\angle BCA=90

i=90-60=30^{\circ}

We know that, i = r

So, i=r=30°

Hence, The angle is the light reflected from the second mirror is 30°

vladimir1956 [14]3 years ago
4 0

Answer:

The angle is the light reflected from the second mirror is 30°

Explanation:

Given that,

Angle between mirrors = 100°

Angle of incident = 70°

We know that,

The incident angle is equal to the reflected angle.

We need to calculate the angle BCA

According to figure,

In ,

Put the value into the formula

We need to calculate the angle is the light reflected from the second mirror

Using relation of incident and reflection

We know that, i = r

So, i=r=30°

Hence, The angle is the light reflected from the second mirror is 30°

Read more on Brainly.com - brainly.com/question/13152660#readmore

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