The energy levels of an atom are as shown in Fig.1.23
Which one of these transitions will results in the emission of a photon of wavelength 275 nm?
.

The energy levels of an atom of element X are shown in the diagram. Which one of the level transitions will result in the emission of photons of wavelength 620 nm ? Support your answer with mathematical calculations.

The energy levels of an atom are as shown in Fig.1.23 Which transition corresponds to emission of radiation of maximum wavelength? .

The energy level diagram of an element is given below. Identify by doing necessary calculations, which transitions corresponds to the emission of a spectral line of wavelength 102.7nm

Calculate the photon energy in electron- volt for radiation of wavelength 1 metre.

Find the energy of each of the photon which have wavelength of 0.50 A*

Which graph shows how the energy E of a photon of light is related to its wavelengths (lamda) ?

A prism of refractive index mu_1 and another prism of refractive index mu_2 are struck together without a gap as shown in Fig.3.17. . The ngles of the prisms are shown . mu_1 and mu_2 depend on delta ,the wavelength of light according to mu_1=1.20 +(10.8 xx 10^4)/(delta^2) and mu_2 = 1.45 + (1.8 xx 10^4)/(delta^2) , where delta is in nm. Calculate the wavelength delta_0 for which rays incident at any angle on the interface BC pass through without bending at that interrface.