TS EAMCET 04 May 2019 Shift 1 Solved Paper

Both SI an GaAs is used in making solar cells. The energy varies from 3eV on the violet side to 1.5eV on the red side which implies that visible light can make solar energy.The energy band gap of Si and GaAs is greater than photon energy of the radio waves, microwaves and infrared waveswhich implies that the assertion is correct but the reason is wrong.