Question

when light is incident on certain materials, the materials eject electrons. The electron movement can be regulated to construct a. solar water heater b. solar cell c. solar cooker d. solar furnace

Answer 1

when light strike to meterial surface then electrons emitted with the surface of material . this phenomena based on concept of photoelectric effect .

so, electrons movement can be regulated to construct solar cell . because in cell electron movement required so, option (b) is correct

Answer 2

Solar cell  is the correct answer