Question

The intensity of solar radiation at the top of the Earth's atmosphere is 1506 W/m^2. Assuming 60% of the incoming solar energy reaches the Earth's surface and you absorb 50% of the incident energy, find the amount of solar energy you absorb if you sunbathe for 58 minutes.

Answer 1

The correct answer to the following question will be "7.54 *10⁶ J".

Step-by-step explanation:

The given values are:

Earth's top intensity of solar radiation,

`lo=1506 \ W/m^2`

At the surface of the earth,

`l1=(1506* 60)/(100)`

`=903.6 \ W/m^2`

Now,

`Absorbed \ by \ humans = (903.6* 50)/(100)`

`=451.8 \ W/m^2`

As we know,

`radiation \ intensity=(power)/(area)`

and,

`power=(energy)/(time)`

So,

The amount of solar energy absorbed by us,

`=451.8* 58* 60* 1.6* 0.3`

`=7.54* 10^6 \ J`