Question

Which expression gives the wavelength of light in medium 1?

Options

• \[\lambda_1=\frac{\nu}{v_1}\]

• \[\lambda_1=\frac{v_1}{\nu}\]

• \[\lambda_1=\frac{v_2}{\nu}\]

• \[\lambda_1=v_1\nu\]

Answer 1

Wavelength is speed divided by frequency. In medium 1, the speed is \[v_1\], giving \[\lambda_1=\frac{v_1}{\nu}\].