Question

If ‘If ‘I’ is the intensity of the solar radiation at a distance ‘x’ from the surface of the Sun, and if ‘A’ is the surface area of a solar flat plate collector placed at x, with its surface directly facing the sun, and with ‘I’ and ‘A’ given in SI units, the power falling on the collector is given by _________ WattsI’ is the intensity of the solar radiation at a distance ‘x’ from the surface of the Sun, and if ‘A’ is the surface area of a solar flat plate collector placed at x, with its surface directly facing the sun, and with ‘I’ and ‘A’ given in SI units, the power falling on the collector is given by _________ Watts

Answer 1

the relation between power,intensity and area is as below.

P=I*A watts.

so answer is I*A.

Answer 2

Answer is I*A Watts

Explanation:

Intensity is defined as the power transmitted by radiation per unit area.

(Here, area of the plane or collector plate receiving the light must be perpendicular to the solar radiation).

Intensity of the light at a certain distance is given by (I) = Power / Surface area.

Intensity is expressed as Watts/ meter square.

So,

Power (P) = Intensity (I) * Surface area (A)

SI unit of Power is watts.