Question

If there is light in a object then what is necessary in it that it should also have warmth , if so why?

Answer 1

See something like a normal lamp would release a range of wavelength in an visible spectrum and due to circuits and micro sensing technology it gains potential energy and just shifting it's wavelength.. Which is not same for normal... Light bulbs or any led thing.. The radiation moves into the infra red region which we human sense by our touch... And That's heat