For athermanous substances,the coefficient of | vedclass

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(B) The coefficient of transmission $(T)$ is defined as the ratio of the radiant energy transmitted through a substance to the total radiant energy in

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zero.

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(B) The coefficient of transmission $(T)$ is defined as the ratio of the radiant energy transmitted through a substance to the total radiant energy incident upon it.An athermanous substance is a material that does not allow thermal radiation to pass through it.Since no radiant energy is transmitted through an athermanous substance,the transmitted energy is $0$.Therefore,the coefficient of transmission $T = 0$.

For athermanous substances,the coefficient of transmission is

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