When a white light passes through a hollow prism, then
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a
There is no dispersion and no deviation.
b
Dispersion but no deviation.
c
Deviation but no dispersion.
d
There is dispersion and deviation both
answer is A.
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Detailed Solution
One can think of hollow prism to be made of three thin glass slabs. As when light pass through slab it shows neither dispersion nor deviation. Hence, when light passes through hollow prism we can assume it to be same as passing through two thin slabs.