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When a ray enters from air to glass slab |
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Answer» Answer: Hope this will help you . Please mark me as brainleast... Explanation: When a RAY of light enters a glass slab from air then its speed decreases as it encounters a dense MEDIUM. Since to conserve ENERGY (which is DEPENDENT solely on frequency), the frequency MUST remain constant, the wavelength of light changes. Wavelength is decreased by a factor called refractive index of the medium |
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