A thin prism P_1 with angle 6^o and made from | vedclass

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(B) For a combination of two thin prisms to produce dispersion without deviation,the net deviation produced by the combination must be zero.The condit

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$4^o 30'$

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(B) For a combination of two thin prisms to produce dispersion without deviation,the net deviation produced by the combination must be zero.The condition for no deviation is given by: $(\mu_1 - 1)A + (\mu_2 - 1)A' = 0$.Here,$A = 6^o$,$\mu_1 = 1.54$,and $\mu_2 = 1.72$.Substituting the values: $(1.54 - 1) 	imes 6^o + (1.72 - 1) 	imes A' = 0$.$0.54 	imes 6^o + 0.72 	imes A' = 0$.$3.24^o + 0.72 	imes A' = 0$.$A' = -\frac{3.24^o}{0.72} = -4.5^o$.The negative sign indicates that the second prism is inverted relative to the first.The magnitude of the angle is $4.5^o$,which is equal to $4^o 30'$.

$A$ thin prism $P_1$ with angle $6^o$ and made from glass of refractive index $1.54$ is combined with another thin prism $P_2$ of refractive index $1.72$ to produce dispersion without deviation. The angle of prism $P_2$ will be:

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