Class 8 Exam > Class 8 Videos > Science Class 8 > Quick Revision: Light
Quick Revision: Light Video Lecture | Science Class 8
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FAQs on Quick Revision: Light Video Lecture - Science Class 8
| 1. What is light? |  |
| 2. How does light travel? | |
Ans. Light travels in straight lines and at a speed of about 186,282 miles per second (299,792 kilometers per second) in a vacuum.
| 3. What are the different colors of light? | |
Ans. Light is made up of a spectrum of colors, including red, orange, yellow, green, blue, indigo, and violet. These colors can be seen in a rainbow.
| 4. How does light interact with objects? | |
Ans. When light strikes an object, it can be absorbed, transmitted, reflected, refracted, or scattered, depending on the properties of the object.
| 5. How is light essential for life on Earth? | |
Ans. Light is essential for photosynthesis in plants, which is the process by which they convert light energy into chemical energy to produce food. Light also regulates the circadian rhythms of many organisms, including humans.
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Video Description: Quick Revision: Light for Class 8 2025 is part of Science Class 8 preparation.
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