A point source emitting 628 lumen of luminous flux uniformly in all directions is placed at the
Channel: Doubtnut
Date: 05/07/2020

A point source emitting 628 lumen of luminous flux uniformly in all directions is placed at the origin. Calculate the illuminance on a sall area placed at (1.0 m, 0, 0) in such a way that the mnormal to the area makes an angle of `37^@` with the X-axis.