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Light : Reflection & Refraction - Science Video Lecture - Class 10
FAQs on Light : Reflection & Refraction - Science Video Lecture - Class 10
| 1. What is the difference between reflection and refraction? |  |
Ans. Reflection is the bouncing back of light when it strikes the surface of an object, while refraction is the bending of light when it passes from one medium to another.
| 2. How does a mirror produce reflection? | |
Ans. A mirror produces reflection by having a smooth surface that reflects light rays in a regular manner. When light rays strike the mirror, they bounce back at the same angle they hit the mirror, resulting in reflection.
| 3. What is the law of reflection? | |
Ans. The law of reflection states that the angle of incidence (the angle between the incident ray and the normal) is equal to the angle of reflection (the angle between the reflected ray and the normal).
| 4. What causes refraction of light? | |
Ans. Refraction of light occurs when light passes from one medium to another with a different optical density. The change in speed of light as it enters a different medium causes the bending of light rays.
| 5. Why does a straw appear bent when placed in a glass of water? | |
Ans. When light passes from air (a less dense medium) to water (a more dense medium), it undergoes refraction. The change in the speed of light as it enters water causes the light rays to bend, making the straw appear bent.
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Nov 15, 2024 Last updated |
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