Physics
Grade-7
Easy
Question
The angle between the incident ray and the emergent ray is not equal to ____ degrees when the light gets refracted through a spherical lens.
- Concave
- Convex
- Combination of two concave
- Combination of two convex
The correct answer is: Convex
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In the setup shown in the picture below, the sun rays are focused on a paper by a magnifying glass, which results in the paper catching fire. If the magnifying glass was replaced by a concave lens, the paper does not catch fire. Why?
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