An equilateral prism is made of glass whose refractive index for red and violet light is 1.510 and 1.550 respectively. White light is incident at an angle of incidence i and the prism is set to give minimum deviation for red light. Find (a) angle of incidence (b) angular dispersion (i.e., angular width of the spectrum). Given {:(theta=,28^(@),32^(@),50^(@),55^(@)),(sin theta=,0.487,0.529,0.755,0.819):}

An equilateral prism is made of glass whose refractive index for red a

1.	An equilateral prism is made of glass whose refractive index for red and violet light is 1.510 and 1.550 respectively. White light is incident at an angle of incidence i and the prism is set to give minimum deviation for red light. Find (a) angle of incidence (b) angular dispersion (i.e., angular width of the spectrum). Given {:(theta=,28^(@),32^(@),50^(@),55^(@)),(sin theta=,0.487,0.529,0.755,0.819):}
Answer» ANSWER :`5^(@)`

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