Understanding Human Vision and Light
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Questions and Answers

Luminous objects can emit light on their own.

True

Regular reflection occurs when light bounces back in a scattered manner.

False

Diffused reflection occurs when light is reflected in a predictable manner.

False

Light is necessary to illuminate objects and make them visible.

<p>True</p> Signup and view all the answers

A polished surface can act as a mirror and change the direction of light.

<p>True</p> Signup and view all the answers

We can see objects in the dark without any light.

<p>False</p> Signup and view all the answers

Diffused reflection occurs when light reflects from a smooth surface.

<p>False</p> Signup and view all the answers

The moon is an example of a luminous object.

<p>False</p> Signup and view all the answers

There are two types of reflection: regular and diffused.

<p>True</p> Signup and view all the answers

Regular reflection does not form images.

<p>False</p> Signup and view all the answers

The sun is an example of an illuminated object.

<p>False</p> Signup and view all the answers

Reflected light cannot be reflected again if incident on another mirror.

<p>False</p> Signup and view all the answers

The eyes of a crab are shaped to enable it to look only in the front direction

<p>False</p> Signup and view all the answers

Butterflies have small eyes that can only see in the front direction

<p>False</p> Signup and view all the answers

A night bird like an owl can see very well during the day

<p>False</p> Signup and view all the answers

The owl has a small cornea and a small pupil to allow less light in its eye

<p>False</p> Signup and view all the answers

Day birds have more rods and fewer cones in their retina

<p>False</p> Signup and view all the answers

A deficiency of vitamin A in food can cause eye problems

<p>True</p> Signup and view all the answers

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