Q1 of 47 Page 265

A ray of light is incident on a plane mirror at an angle of 30°. What is the angle of reflection?

According to the law of reflection

The angle of incidence = Angle of reflection


Let’s draw a figure for this question –


5Capture.png


According to the given question, incident ray is making an angle of 300 with the plane mirror ()


So angle of incidence ∠i + 300 = 900


Angle of incidence ∠i = 600


From law of reflection, Angle of reflection ∠r = 600


More from this chapter

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2

Determine the angle of incidence of a ray of light, if the reflected ray is at an angle of 90° to the incident ray?

 3

Mention how many reflected rays can be obtained for a given single incident ray falling on a plane mirror?

 1

Mention the type of reflection of light takes place from

(a) a rough surface


(b) a smooth surface

 2

Is the image of an object in plane mirror virtual or real?