MCQOPTIONS
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MCQOPTIONS
| 1. |
Expression for refractivity is given by ___________ |
| A. | N=(n-1)×106 |
| B. | N=(n-1)×10-6 |
| C. | N=1/(n-1) |
| D. | N=\(\frac{1}{n-1}\)×10-6 |
| Answer» B. N=(n-1)×10-6 | |