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When sunlight is focused through a lens onto a white piece of paper, what is the immediate effect observed?

• The paper immediately ignites.

• A concentrated bright spot of light appears.

• The paper becomes translucent.

• The paper feels cooler to the touch.

What is the primary purpose of coloring a section of the paper black in this experiment?

• To make the focused light easier to see.

• To increase the paper's ability to absorb heat.

• To create a contrasting background for the light.

• To make the paper more durable.

What is the outcome when concentrated sunlight is focused on the black-colored section of the paper?

• The black color lightens.

• The paper quickly starts to smoke and burn, forming a hole.

• The light is completely absorbed without any visible change.

• The paper becomes slightly warm.

Why does the black-colored paper burn more readily than white paper when exposed to focused sunlight?

• Black paper is chemically different and more flammable.

• Black surfaces reflect more light, intensifying the heat.

• Black surfaces absorb a greater amount of light energy, converting it into heat.

• White paper has a protective coating that prevents burning.