When one enters a dim-lit room from bright light,one is unable to see the objects in the room for some time. Explain why.

(N/A) In bright light,the iris contracts the pupil of the eye to allow less light to enter. When we enter a dim-lit room,the iris takes time to expand the pupil to allow more light to enter the eye. Thus,for a short duration,one is unable to see clearly in a dim-lit room.