Give one reason to prove that light is a form of energy
Answers
Reason: we can convert light energy into electrical energy by solar panel.
Answer 1 : When light falls on any object, it becomes hotter after a while. Since heat is a form of energy, this proves that light is a form of energy.
Answer 2 : Photovoltaic panels are used to convert light into electricity. Since electricity is a form of energy, this proves that light is a form of energy.
Answer 3 : Solar thermal collector is used to heat water using sunlight. Since heat is a form of energy, this proves that light is a form of energy.
Answer 4 : Plants use carbon dioxide, water and sunlight as raw materials to produce food with the help of chlorophyll. This process is called photosynthesis. The food produced is consumed by animals as a source of energy. In the absence of sunlight, plants cannot produce food. This proves that light is a form of energy.
Answer 5 : When sunlight falls on water bodies, the water heats up and evaporates into atmosphere. Eventually the water droplets form cloud and cause rain. Since work is done during this process, it proves that light is a form of energy.
Answer 6 : Solar cookers are used to cook food using sunlight. Since cooking of food requires energy, this proves that light is a form of energy.