Which type of solar radiation is the least powerful

Less powerful solar radiation is visible light.

Explanation:

Visible light or radiation is less powerful solar radiation; contains 42% of the solar emission energy and can be decomposed into distinct color radiation ranging from violet to red. Visible radiation contains adequate energy to be harnessed by photosynthesis.

The visible light or visible spectrum is the set of electromagnetic waves that, when penetrating our eyes, can sensitize the retina and trigger the mechanism of vision. These waves, like any other electromagnetic radiation, are caused by oscillating electric charges.