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प्रश्न
When a parallel beam of light enters a water surface obliquely at some angle, what is the effect on the width of the beam?
अति संक्षिप्त उत्तर
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उत्तर
When a parallel beam of light enters a water surface obliquely, it bends towards the normal due to refraction. The width of the beam diminishes because the parallel rays are refracted closer together, though they remain parallel inside the water.
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