Two mirrors meet at right angles. A ray of light is incident on one at an angle of 30° as shown in Fig. 16.19. Draw the reflected ray from the second mirror.
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Two mirrors meet at right angles. A ray of light is incident on one end at an angle of 30
o
as shown in figure. Draw the reflected ray from the second mirror.
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At Mirror OA,
Angle of incidence = angle of reflection = 30
o
∠CAB=30
o
∠CAB+∠CBA+∠ACB=180
o
30
o
+90
o
+∠ABC=180
o
∠ABC=60
o
At mirror OB,
Angle of incidence = angle of reflection = 60
o
Note that,
AC ∣∣ OB
Angle between incident ray and AC = Angle between reflected ray and OB =30
o
Hence, first incident ray are last reflected ray in this case are parallel.
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