Question

Question (1): According to" inverse
square law "the relation between photo
current (i) and intensity(l) of incident
electromagnetic radiation is given by
(a) photo current (i) is directly
O proportional to the intensity(l) of
incident radiation;
(b) photo current(i) is directly
proportional to the . of intensity of
incident radiation;​

Answer 1

Answer:

The intensity (or illuminance or irradiance) of light or other linear waves radiating from a point source (energy per unit of area perpendicular to the source) is inversely proportional to the square of the distance from the source; so an object (of the same size) twice as far away, receives only one-quarter the energy ...