Physics-
General
Easy
Question
A given ray of light suffers minimum deviation in an equilateral prism P. Additional prisms Q and R of identical shape and material are now added to P as shown in the figure. The ray will suffer
- Greater deviation
- Same deviation
- No deviation
- Total internal reflection
The correct answer is: Same deviation
As the prisms Q and R are of the same material and have identical shape they combine to form a slab with parallel faces. Such a slab does not cause any deviation.
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