Light Behavior and Lens Properties

The video tutorial explains the concepts of reflection and refraction of light, focusing on how light behaves when it encounters different surfaces and mediums. It introduces the types of lenses, concave and convex, and their properties. Through experiments, the video demonstrates how light converges or diverges when passing through these lenses. The tutorial also covers prisms and their effect on light bending. The key takeaway is understanding how lenses manipulate light, with convex lenses converging light rays and concave lenses diverging them.

What happens to light when it hits a smooth and polished surface?

• It bounces back.

• It passes through.

• It gets absorbed.

• It bends slightly.

What is the main function of a magnifying glass?

• To reflect light.

• To absorb light.

• To magnify objects.

• To disperse light.

Which type of lens is thicker in the middle and thinner at the edges?

• Flat lens

• Convex lens

• Concave lens

• Prism

What kind of image does a convex lens create when an object is held very close?

• Upright and real

• Inverted and virtual

• Upright and virtual

• Inverted and real

What happens to light when it passes through a prism?

• It remains straight.

• It gets absorbed.

• It bends away from the base.

• It bends towards the base.

How can a spherical lens be visualized in terms of prisms?

• As a flat surface

• As a single prism

• As two prisms stacked base to base

• As two prisms stacked point to point

What is the main characteristic of a converging lens?

• It makes light rays diverge.

• It absorbs light rays.

• It makes light rays converge.

• It reflects light rays.

Why can't a concave lens focus sunlight to a point?

• Because it converges light rays.

• Because it diverges light rays.

• Because it reflects light.

• Because it absorbs light.

What is the effect of a concave lens on light rays?

• It reflects them.

• It converges them.

• It diverges them.

• It absorbs them.

Which type of lens is used in magnifying glasses?

• Concave lens

• Flat lens

• Prism

• Convex lens