Class 7 Exam > Class 7 Videos > Science Class 7 > Quick Revision: Light
Quick Revision: Light Video Lecture | Science Class 7
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111 videos|246 docs|28 tests
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FAQs on Quick Revision: Light Video Lecture - Science Class 7
| 1. What is light? |  |
Ans. Light is a form of electromagnetic radiation that is visible to the human eye. It consists of particles called photons that travel in waves.
| 2. How does light travel? | |
Ans. Light travels in a straight line until it is reflected, refracted, or absorbed by an object. It can travel through a vacuum, air, or transparent materials such as glass.
| 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 are a result of the different wavelengths of light.
| 4. How does light interact with different materials? | |
Ans. Light can be absorbed, reflected, or refracted when it interacts with different materials. The behavior of light depends on the properties of the material it encounters.
| 5. How is light used in our daily lives? | |
Ans. Light is used for various purposes in our daily lives, such as lighting up our homes, powering electronic devices, and enabling communication through optical fibers.
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Nov 24, 2024 Last updated |
Video Description: Quick Revision: Light for Class 7 2024 is part of Science Class 7 preparation.
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Video Lecture & Questions for Quick Revision: Light Video Lecture | Science Class 7 - Class 7 full syllabus preparation | Free video for Class 7 exam to prepare for Science Class 7.
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