Question

1. when we enter a dim light room from a bright light, we're not able to see the object for sometime. explain why

2. why do we have two eyes Instead of one
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Answer 1

Answer:

1. It takes some time to see objects in a dim or dark room when we enter the room from the bright sunlight outside because in bright sunshine the pupil of our eye is small. Hence, as we enter a dim room, very little light enters our eyes and we can't see properly.

2. We need two eyes because a human being has a horizontal field of view of about 150° with one eye and of about 180° with two eyes. Thus, two eyes provide us wider horizontal field of view. With one eye, the world looks flat, i.e., two dimensional only.