Light propagates faster through Medium A than through another Medium B. (a)Which of the two media has a higher optical density?
(b)State the condition under which no 'change in the direction of propagation of a light day would take place when it passes from Medium A to Medium B.
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(A) medium B
(B) when the light falls perpendicular to the surface of medium B
(B) when the light falls perpendicular to the surface of medium B
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3
Answer:
a) Medium B
b) When it falls normally on the surface separating th e two transparent media
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