refractive index
/rɪˌfræktɪv ˈɪndeks/noun
उच्चारण रिफ़्रैक्टिव इन्डेक्स
अपवर्तनांक
Advanced word
noun
- 1
[C] technical
a measure of how much a substance bends light that passes into it
अपवर्तनांक
- Glass has a higher refractive index than water.
- The refractive index of diamond is about 2.42.
✓In the exam
General knowledge
Diamond sparkles because its very high refractive index causes total internal reflection of light.
हीरा इसलिए चमकता है क्योंकि उसका बहुत ऊँचा refractive index प्रकाश का total internal reflection कराता है।