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✦ Class 10 · Science
Light Reflection and Refraction
Why does a spoon show you upside down on one side but right-side up on the other? And why does a straw in water look broken when you know it's straight?
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This board is from a different Science lesson — yours will look like this. She writes and draws while she explains, and stops to check you followed.
Doubts this lesson clears up
- Why do we measure angles from the normal and not from the mirror surface itself?
- What's the difference between a real image and a virtual image? Can I put a screen in front of one?
- Why is focal length half the radius of curvature? Why f = R/2?
- Does light actually slow down in water, or does something else happen?
- Why does a convex mirror show a wider view than a plane mirror?
- What does the power of a lens mean, and why do doctors use dioptres for glasses?
Class 10 Science
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