Light & Vision

Front

What is the function of the pupil in the eye?

Back

The pupil is the opening in the center of the iris that allows light to enter the eye.

Front

What is the difference between concave and convex lenses?

Back

Concave lenses diverge light rays, while convex lenses converge light rays.

Front

What phenomenon causes a coin to appear to disappear when submerged in water?

Back

Refraction causes the light to bend as it passes from water to air, making the coin appear to disappear.

Front

What is the role of the iris in the eye?

Back

The iris is a muscle that controls the size of the pupil and thus regulates the amount of light entering the eye.

Front

How does a basketball interact with orange light?

Back

A basketball reflects orange light, which is why it appears orange to our eyes.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, changing its speed.

Front

What is the role of the cornea in vision?

Back

The cornea is the transparent front part of the eye that helps to focus light onto the retina.

Front

What is the retina and its function?

Back

The retina is the light-sensitive layer at the back of the eye that converts light into neural signals.

Front

What is the difference between reflection and absorption of light?

Back

Reflection is when light bounces off a surface, while absorption is when light is taken in by a material.

Front

What is the significance of the focal point in optics?

Back

The focal point is where parallel rays of light converge after passing through a lens.