Question

X 4. In the given figure, two mirrors P and 0/1
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?*
555
60
O 35 degree
55 degree
X Х
O
50 degree
70 degree​

Answer 1

Answer:

Second ray after reflection from mirror M

2

goes parallel to mirror M

1

∴∠M

2

PS=60

∘

∴∠SPA=30

∘

∴∠APQ=30

∘

∴∠QPO=60

∘

∴∠PQO=60

∘

(sum of all angle in a triangle 180

∘

)

∠BQP=i=90

∘

−60

∘

=30

∘

solution