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(B) According to Wien's displacement law,the product of the wavelength of maximum intensity $(\lambda_m)$ and the absolute temperature $(T)$ is a cons

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$9600$

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(B) According to Wien's displacement law,the product of the wavelength of maximum intensity $(\lambda_m)$ and the absolute temperature $(T)$ is a constant:$\lambda_m T = b$ (constant)Given:Initial temperature $T_1 = 6000\,K$Initial peak wavelength $\lambda_{m1} = 4800\,\mathring{A}$Final temperature $T_2 = 3000\,K$Using the relation $\lambda_{m1} T_1 = \lambda_{m2} T_2$:$4800 	imes 6000 = \lambda_{m2} 	imes 3000$Solving for $\lambda_{m2}$:$\lambda_{m2} = \frac{4800 	imes 6000}{3000}$$\lambda_{m2} = 4800 	imes 2$$\lambda_{m2} = 9600\,\mathring{A}$

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