MCQ
For a material, the refractive indices for red, violet and yellow colour light are respectively $1.52,1.64$ and $1.60.$ The dispersive power of the material is
- A$2$
- B$0.45$
- ✓$0.2$
- D$0.045$
✓
Answer
Correct option: C.
$0.2$
$ \omega=\frac{1.64-1.52}{1.6-1}=\frac{0.12}{0.6}=0.2$
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