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Optics-Refraction of Light Practice Questions - Page 3

Questions 21–30 of 35 · Page 3 of 4

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Questions

35

Solutions

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Q21The twinkling of stars is mainly due to:MediumSolve →Q22An object is in the air, and an observer in water views it. How does it appear?MediumSolve →Q23When light enters from air into water:MediumSolve →Q24Mirage formation is due to:MediumSolve →Q25A light ray strikes the surface at an angle greater than the critical angle. Which will NOT occur?MediumSolve →Q26Which factor does NOT affect the refractive index?MediumSolve →Q27Which colour deviates most when white light passes through a prism?MediumSolve →Q28When refraction occurs, which of these changes? 1. Speed 2. Wavelength 3. Frequency Select the correct answer:MediumSolve →Q29A pencil partially dipped in water appears bent because:MediumSolve →Q30What happens to the direction of light when it passes normally from one medium to another?MediumSolve →

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