Question

Which of these is/are the useful effect(s) of visible light?

• A. Helps to produce energy by photosynthesis
• B. Used in remote control and night vision camera
• C. Used in radar and mobile phones
• D. Used in the solar cell

Answer 1

Answer: (A), (D)

The correct options are
A

Helps to produce energy by photosynthesis

D

Used in the solar cell

Photosynthesis is the process used by plants, algae, and certain bacteria to harness energy from sunlight, which is visible light and turn it into chemical energy and also produce oxygen. Sunlight is also used in solar cells to produce electrical energy using light energy.
Infrared rays are used in remote control and night vision camera and microwaves are used in radar and mobile phones.