Ray Optics and Optical Instruments

Question: The ray diagram could be correct

1) If ${{n}_{1}}={{n}_{2}}={{n}_{g}}$

2) If ${{n}_{1}}={{n}_{2}}$ and ${{n}_{1}}<{{n}_{g}}$

3) If ${{n}_{1}}={{n}_{2}}$ and ${{n}_{1}}>{{n}_{g}}$

4) Under no circumstances

Solution:

Explanation: No Explanation

Refraction at Curved Surface

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