Question: ans How does the critical angle ( 0.) for total internal reflection change when ratio between indices of refraction no, of the two media decreases?

ans

ans How does the critical angle ( 0.) for total
How does the critical angle ( 0.) for total internal reflection change when ratio between indices of refraction no, of the two media decreases? It gets larger (relative to the normal) It does not change. It gets smaller (relative to the normal)

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