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## Class 10 Physics (India)

### Unit 1: Lesson 9

Absolute & relative refractive index

# Connection between relative and absolute refractive indices

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## Problem

The relative refractive index of...
• titanium dioxide with respect to ethanol, n, start subscript, start text, T, E, end text, end subscript, equals, 1, point, 86, and
• germanium with respect to titanium dioxide, n, start subscript, start text, G, T, end text, end subscript, equals, 1, point, 54.
What is the relative refractive index, n, start subscript, start text, G, E, end text, end subscript, of germanium with respect to ethanol?
Note: Write the answer correct up to two decimal places.
n, start subscript, start text, G, E, end text, end subscript, equals
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