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Question

(A) The intensity of radiation $(I)$ is defined as the energy $(E)$ incident per unit area $(A)$ per unit time $(t)$.Mathematically,$I = \frac{E}{A

Vedclass · Accepted Answer

$M^{1} L^{0} T^{-3}$

Vedclass · Answer

(A) The intensity of radiation $(I)$ is defined as the energy $(E)$ incident per unit area $(A)$ per unit time $(t)$.Mathematically,$I = \frac{E}{A 	imes t}$.The dimensional formula for energy $(E)$ is $[M^{1} L^{2} T^{-2}]$.The dimensional formula for area $(A)$ is $[L^{2}]$.The dimensional formula for time $(t)$ is $[T^{1}]$.Substituting these into the formula:$I = \frac{[M^{1} L^{2} T^{-2}]}{[L^{2}] 	imes [T^{1}]}$$I = [M^{1} L^{2-2} T^{-2-1}]$$I = [M^{1} L^{0} T^{-3}]$Therefore,the correct option is $A$.

Write the dimensional formula for the intensity of radiation.

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