The refractive indices of two media are denoted by n1 and n2, and the velocities of light in these two media are respectively v1 and v 2. If nz/ni is 1.5, which one of the following statements is correct?

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Q: 63 (NDA-II/2018)
The refractive indices of two media are denoted by n1 and n2, and the velocities of light in these two media are respectively v1 and v
2. If nz/ni is
1.5, which one of the following statements is correct?
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question_subject: 

Maths

question_exam: 

NDA-II

stats: 

0,1,1,1,1,0,0

keywords: 

{'refractive indices': [0, 0, 0, 1], 'n2': [1, 0, 3, 1], 'ni': [0, 0, 0, 2], 'times v1': [0, 0, 0, 1], 'light': [16, 4, 34, 62], 'v1': [0, 0, 0, 1], 'velocities': [0, 0, 1, 1], 'v2': [0, 0, 0, 1], 'times v2': [0, 0, 0, 1], 'nz': [0, 0, 0, 1]}