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प्रश्न
Draw a diagram to show how an image is produced by a pair of total reflecting prisms arranged as in a periscope.
आकृती
अति संक्षिप्त उत्तर
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उत्तर
As shown in the diagram, a pair of total reflecting prisms deviates the light by 90° twice, forming an image. Total internal reflection depends on the relationship between the critical angle and the refractive index of the dense medium.
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