Question

In the given figure, two mirrors P and Q are situated at an angle of 60 deg with each other and a ray of light is incident on mirror P at an angle of 55 deg. What is the value of angle A if the ray again reflected by the mirror Q? ​

Answer 1

Answer:

Second ray after reflection from mirror M

2

goes parallel to mirror M

1

∴∠M

2

PS=60

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∴∠SPA=30

∘

∴∠APQ=30

∘

∴∠QPO=60

∘

∴∠PQO=60

∘

(sum of all angle in a triangle 180

∘

)

∠BQP=i=90

∘

−60

∘

=30

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