MCQOPTIONS
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MCQOPTIONS
| 1. |
A glass slab has the left half of refractive index \[{{n}_{1}},\] and the right half of \[{{n}_{2}}=3{{n}_{1}}\]. The effective refractive index of the whole slab is |
| A. | \[\frac{{{n}_{1}}}{2}\] |
| B. | \[2n\] |
| C. | \[\frac{3{{n}_{1}}}{2}\] |
| D. | \[\frac{2{{n}_{1}}}{3}\] |
| Answer» D. \[\frac{2{{n}_{1}}}{3}\] | |