Answer:
It takes twenty to thirty minutes have been taken
Explanation:
When we enter into a dark room after exposure to the sun bright light we are not able to see the things in the surrounding environment. This process is called dark adaptation. It takes around 20 to 30 minutes in reaching its maximum level and depends on the exposure of light in the previous environment. The human being retina work on dark adaptation. Cones perform in a day, on the other hand, the rods work at night. So both rode and cones work together and gradually increase the sensitivity of light in the dark adaptation. Cones work faster then rodes.
