Physics

Problem

A beam of light enters a tank of liquid at an incident angle of

25.0^{\circ}

measured from the normal. The beam travels

1.00\,\text{m}

through the liquid in

4.40\,\text{ns}

before emerging into air. Assuming

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

and

n_{\text{air}} = 1.00

, calculate the angle that the refracted beam makes with the normal in air.