1. Prepare Frayer diagrams for TRAVELOGUE, PICTURESQUE AND CLUSTER.
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(a) Calculate the critical angle for glass air interface if a ray of light incident on a glass surface is deviated through 15
o
when angle of incident is 45
o
.
(b) A ray of light travels from denser medium having refractive index
2
to air, What should be the angle of refracted when angle of incident is 30
0
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