Calculate the frequency if the wavelength is $750 \ nm$.

While passing through an applied magnetic field,which of the following undergoes the maximum deflection?

The frequency of a light wave is $12 \times 10^{14} \ s^{-1}$. The wave number associated with it is .......

What is scattering? Which property of electromagnetic radiation can explain it? Explain.

Which color in the visible spectrum has the minimum energy? State its energy,wavelength,and frequency.

Consider two radiations of wavelengths $1. \lambda_1 = 2000 \mathring{A}$ and $2. \lambda_2 = 6000 \mathring{A}$. The ratio of the energies of these two radiations $\left(\frac{E_1}{E_2}\right)$ is . . . . . . (Nearest integer).