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Properties of Light Video Lecture | Science Class 5
FAQs on Properties of Light Video Lecture - Science Class 5
| 1. What are the main properties of light? |  |
Ans. The main properties of light include reflection, refraction, dispersion, and absorption. Reflection is when light bounces off surfaces, refraction is the bending of light as it passes through different materials, dispersion is the separation of light into different colors, and absorption is when light is taken in by materials.
| 2. How does light travel? | |
Ans. Light travels in straight lines in a vacuum, at a speed of about 299,792 kilometers per second (km/s). When light passes through different mediums, such as air or water, its speed changes, which can cause it to bend or refract.
| 3. What is reflection of light? | |
Ans. Reflection of light is the bouncing back of light rays when they hit a surface. This property allows us to see objects around us, as light reflects off surfaces and enters our eyes. Mirrors are a common example of materials that reflect light effectively.
| 4. What is refraction and where can we see it? | |
Ans. Refraction is the bending of light rays as they pass from one medium to another, such as from air to water. We can see refraction when looking at a straw in a glass of water, where the straw appears bent at the surface of the water.
| 5. Why do we see colors in light? | |
Ans. We see colors in light because different wavelengths of light correspond to different colors. When white light passes through a prism, it is dispersed into a spectrum of colors, revealing the red, orange, yellow, green, blue, indigo, and violet that make up white light.
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