Periscope is another optical instrument that works on the principle of total ____...? Mcqs

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Periscope is another optical instrument that works on the principle of total ____...?

(A) Refraction
(B) Diffraction

(C) External Reflection
(D) Internal Reflection

✅ Correct Answer: Internal Reflection

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Source: This question is taken from the Everyday Science

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