1 Statement (A) : When a ray of light enters a glass slab from air, – InterviewSolution

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1.	1 Statement (A) : When a ray of light enters a glass slab from air, refraction of light takes placeStatement (B) : Velocity of light decreases after entering the glass slab[a) both A and B are trueb) both A and B are falsec) A is true but B is falsed) B is true but A is false
Answer» 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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