Question

5) Light falls on a prism grazing along first
surface of a prism and the emergent ray is
normal to the
$d = i + i -a$
2nd face of the pris

m. If D is
angle of deviation then the refracting angle of
the prism is
1) 90-2D 2) 90 -D 3) 90 =4) 180-2D
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Answer 1

Answer:

split into 7 colours....