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प्रश्न
Draw a labelled ray diagram to show how a ray of light passes through a parallel-sided glass block if it hits the glass block at 90° (that is, perpendicular to the glass block).
आकृती
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उत्तर
If the light ray hits the glass block at 90° (that is, perpendicular to the glass block):
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
