A given ray of light suffers minimum deviation in an equilateral prism 
. Additional prisms 
and 
of identical shape and of same material as that of 
are now combined as shown in figure.
The ray will now suffer
Text Solution
Verified by ExpertsThe correct answer is:
C
When the ray suffers minimum deviation, it becomes parallel to the base of prism 
. As prisms 
and 
are of same material and have identical shape, therefore, the ray continues to be parallel to base of Q and R. Hence final deviation of the ray remains the same as before.
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