Question

PQ and RS are two mirrors placed parallel to each other. An incident ray AB

strikes the mirror PQ at B , the reflected ray moves along the path BC and strikes

the mirror RS at C and again reflects back along CD.If  PBA  50 then,

Answer the following questions.



a What is the measure ofABC ?

i) 400

ii) 500

iii) 700

iv) 800

b What is the measure ofDCS ?

i) 300

ii) 400

iii) 500

iv) 600

c What is the measure ofBCS ?

i) 1300

ii) 1250

iii) 1100

iv)1200

d What is the measure ofBCR ?

i) 400

ii) 450

iii) 500

iv) 550

e What is the measure of QBC ?

i) 400

ii) 500

iii) 550

iv) 600​

Answer 1

Answer:

400 see carefully so as you see all places

Answer 2

Answer:

a. 80 degree. b. 50 degree. c. 130 degree. d. 50 degree. e. 50 degree

Step-by-step explanation:

L ABC= 180-(50+50)=180-100=80 degree

L DCS= 90-40=50 degree(angle of incidence = angle of reflection. we got abc as 80. so, angle of reflection becomes half of 80 that is 40...as the normal is 90 degree)

L BCS= 90+40=130 degree

L BCR=L DCS=50 degree

L QBC= L PBA=50 degree

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