Exploring the Concept of Light

What is light?

• Light is a type of sound wave.

• Light is a form of matter.

• Light is a chemical reaction.

• Light is visible electromagnetic radiation.

What is the speed of light in a vacuum?

• 300,000,000 meters per second

• 150,000,000 meters per second

• 299,792 kilometers per second

• 299,792,458 meters per second

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Name the primary source of natural light.

• Moon

• Sun

• Fireflies

• Stars

What is the difference between reflection and refraction?

• Reflection is the bouncing back of light; refraction is the bending of light.

• Reflection and refraction are the same phenomenon.

• Reflection occurs only in water; refraction occurs in air.

• Reflection is the bending of light; refraction is the bouncing back of light.

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What are the colors of the visible spectrum?

• Red, Green, Blue, Yellow, Brown

• Red, Yellow, Green, Blue, Pink

• Cyan, Magenta, Yellow, Black

• Red, Orange, Yellow, Green, Blue, Indigo, Violet

What is the role of a prism in light?

• A prism absorbs all colors of light.

• A prism disperses light into its component colors through refraction.

• A prism reflects light without changing its color.

• A prism generates light from darkness.

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How does light travel?

• Light travels only in straight lines.

• Light is made up of solid particles that do not move.

• Light travels in waves and particles (photons) at a speed of about 299,792 km/s in a vacuum.

• Light travels faster in water than in a vacuum.

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What is the phenomenon of dispersion?

• Dispersion is the reflection of light off a surface.

• Dispersion is the process of amplifying sound waves.

• Dispersion refers to the mixing of different colors in a prism.

• Dispersion is the separation of waves into their constituent frequencies or wavelengths as they travel through a medium.

What is the importance of light in photosynthesis?

• Light is only needed for plant growth, not photosynthesis.

• Photosynthesis occurs without any light at all.

• Light is a byproduct of photosynthesis, not a requirement.

• Light is crucial for photosynthesis as it provides the energy required for converting carbon dioxide and water into glucose.

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What is the difference between opaque, transparent, and translucent materials?

• Opaque materials allow light to pass through completely.

• Opaque materials block light, transparent materials allow clear passage of light, and translucent materials allow partial light passage.

• Transparent materials block all light.

• Translucent materials do not allow any light to pass through.

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