The value of refractive index of a rock salt is ………………
The value of refractive index of a rock salt is ………………
A) 2. 52
B) 1.54
C) 2. 62
D) 1.42
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The value of refractive index of a rock salt is ………………
A) 2. 52
B) 1.54
C) 2. 62
D) 1.42