Solar cell is a device that converts light energy into electrical energy. We obtain the highest output of energy during noon when the sun is just above our head, because :
- AThe density of light radiation is maximum when Sun rays are falling vertically
- BThe heat produced is highest in the noon
- CThe sun is nearest to the earth at noon
- DNone of the above
Show answer and explanation
Correct answer: (a) The density of light radiation is maximum when Sun rays are falling vertically
Explanation
At noon the Sun's rays fall on the solar cell almost vertically, so the most light falls on each square metre of its surface. The rays also pass through the least air.
So the cell gives its highest output then. The Sun is not nearer the Earth at noon.