A thin prism P_1 of angle of prism 4^@ and refractive index 1.54 is combined with another prism P_2 of refractive index 1.72 for dispersion without deviation. The angle of prism of P_2 is:

A thin prism P_1 of angle of prism 4^@ and refractive index 1.54 is co

1.	A thin prism P_1 of angle of prism 4^@ and refractive index 1.54 is combined with another prism P_2 of refractive index 1.72 for dispersion without deviation. The angle of prism of P_2 is:
Answer» `3^@` `5.33^@` `2.6^@` `4^@` ANSWER :A

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A thin prism P_1 of angle of prism 4^@ and refractive index 1.54 is combined with another prism P_2 of refractive index 1.72 for dispersion without deviation. The angle of prism of P_2 is:

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