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प्रश्न
A prismatic periscope uses isosceles right angled glass prism. These prisms are based on the phenomenon of:
विकल्प
reflection of light
refraction of light
dispersion of light
total internal reflection of light
MCQ
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उत्तर
Total internal reflection of light
Explanation:
The prisms in a prismatic periscope reflect light by total internal reflection. This gives a bright image and turns the light through the required angle.
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