Which of the following does not contain material particles?

The following sketch represents a specific wave of light. What will be the color of the light represented by this wave?

Which of the following coloured light has the highest energy?

Work functions of four metals $M_1, M_2, M_3$ and $M_4$ are $4.8, 4.3, 4.75$ and $3.75 \ eV$ respectively. The metals which do not show photoelectric effect when light of wavelength $310 \ nm$ falls on the metals are

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

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