A laser pulse takes to traverse a length of clear plastic

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Geometric Optics · Geometric Optics

Problem

A laser pulse takes

1.28\,\text{ns}

to traverse a

0.250\,\text{m}

length of clear plastic. Determine the index of refraction of the plastic. Use

c = 3.00\times10^{8}\,\text{m/s}