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(B) The luminous intensity $(I)$ is defined as the luminous flux $(\Phi)$ emitted by a light source per unit solid angle $(\Omega)$ in a given directi

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Luminous flux emitted by source per unit solid angle

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(B) The luminous intensity $(I)$ is defined as the luminous flux $(\Phi)$ emitted by a light source per unit solid angle $(\Omega)$ in a given direction.The formula is given by:$I = \frac{\Phi}{\Omega}$Where:$I$ = Luminous intensity (measured in candela, $cd$)$\Phi$ = Luminous flux (measured in lumens, $lm$)$\Omega$ = Solid angle (measured in steradians, $sr$)Therefore, the correct definition is luminous flux emitted by the source per unit solid angle.

$A$ source of light emits a continuous stream of light energy which falls on a given area. Luminous intensity is defined as

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