ADDITIONAL EXERCISES
Chapter 2: Chapter 10 · PHYSICS PART-2 · EN medium
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. The Å H( line emitted by hydrogen in a star is found to be red- shifted by Å. Estimate the speed with which the star is receding from the Earth. . Explain how Corpuscular theory predicts the speed of light in a medium, say, water, to be greater than the speed of light in vacuum. Is the prediction confirmed by experimental determination of the speed of light in water? If not, which alternative picture of light is consistent with experiment? . You have learnt in the text how Huygens’ principle leads to the laws of reflection and refraction.
📖 NCERT Class 12 Physics Part 2 · Page 80
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. The Å H( line emitted by hydrogen in a star is found to be red- shifted by Å. Estimate the speed with which the star is receding from the Earth. .
Explain how Corpuscular theory predicts the speed of light in a medium, say, water, to be greater than the speed of light in vacuum. Is the prediction confirmed by experimental determination of the speed of light in water? If not, which alternative picture of light is consistent with experiment? .
You have learnt in the text how Huygens’ principle leads to the laws of reflection and refraction. Use the same principle to deduce directly that a point object placed in front of a plane mirror produces a virtual image whose distance from the mirror is equal to the object distance from the mirror.
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