A thin prism P_1 with angle 4^o and made from | vedclass

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

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$3$

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(C) For a combination of two thin prisms to produce dispersion without deviation,the net deviation produced by the system must be zero.The deviation produced by a thin prism is given by $\delta = (\mu - 1)A$.For the combination,the net deviation $\delta_{net} = \delta_1 + \delta_2 = 0$.Since the prisms are combined to produce dispersion without deviation,they must be placed in opposite orientations,so $\delta_1 = -\delta_2$.Thus,$(\mu_1 - 1)A_1 = (\mu_2 - 1)A_2$.Given: $\mu_1 = 1.54$,$A_1 = 4^o$,$\mu_2 = 1.72$.Substituting the values: $(1.54 - 1) 	imes 4^o = (1.72 - 1) 	imes A_2$.$0.54 	imes 4^o = 0.72 	imes A_2$.$2.16 = 0.72 	imes A_2$.$A_2 = \frac{2.16}{0.72} = 3^o$.

$A$ thin prism $P_1$ with angle $4^o$ and made from a glass of refractive index $1.54$ is combined with another thin prism $P_2$ made from glass of refractive index $1.72$ to produce dispersion without deviation. The angle of the prism $P_2$ is.....$^o$

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