Three thin prisms are combined as shown in figure. The refractive indices of the crown glass for red, yellow and violet rays are \mu_r , \mu_y \and \mu_v respectively and those for the flint glass are \mu_r ', \mu_y', \mu_v' respectively, if there is no net deviation in the yellow ray then the ratio A'/A will be :-

Correct Answer is : 2(µy−1)(µy′−1)

{2 (\\mu_{v}-\\mu_{r} )}/{ (\\mu_{v}'-\\mu_{r}')}

{2 (\\mu_{y}-1 )}/{ (\\mu_{y}'-1 )}

{2 (\\mu_{v}'-\\mu_{r}' )}/{ (\\mu_{v} -\\mu_{r} )}

{2 (\\mu_{y}'-1 )}/{ (\\mu_{y} -1 )}

NEET 2020 Model Question Paper 1

Question : 26 of 180

Marks: +1, -0

Three thin prisms are combined as shown in figure. The refractive indices of the crown glass for red, yellow and violet rays are μr,μy‌and‌μv respectively and those for the flint glass are μr′,μy′,μv′ respectively, if there is no net deviation in the yellow ray then the ratio

A′

will be :-

2(µv−µr)
(µv′−µr′)
2(µy−1)
(µy′−1)
2(µv′−µr′)
(µv−µr)
2(µy′−1)
(µy−1)

Validate

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