A short pulse of light travels through three transparent media P, Q and R as follows:…

PHYSICS · Multi-part · AP · Physics 2: Algebra-based · Geometric Optics · Geometric Optics

Problem

A short pulse of light travels through three transparent media P, Q and R as follows: • in medium P it covers a distance of

0.60\,\text{m}

2.0\,\text{ns}

, • in medium Q it covers

0.75\,\text{m}

3.0\,\text{ns}

, • in medium R it covers

0.45\,\text{m}

2.0\,\text{ns}

. Take the speed of light in vacuum as

3.0\times10^8\,\text{m\,s}^{-1}

. (i) Calculate the absolute refractive index of each medium. (ii) Arrange the media in increasing order of optical density.