The wavelength of a spectral line is `4000 Å`. Calculate its frequency and energy.

The wavelength of a blue light is 4800 Å. Calculate the frequency and wave number of this light.

The wavelength of a blue light is 4800 Å. Calculate the frequency and wave number of this light.

The wavelength of a spectral line of cesium is 460 nm. Calculate the frequency of the line.

The wavelength of a blue light is 4800Å . Calculate the frequency and wave number of this light.

The wavelength of a spectral line of cesium is 460 nm. calculate the frequency of the line.

A certain spectral line has wavelength of 4000 Å . Calculate the frequency and the energy in electron volts of the photons associated with it.

A photon has a wavelength 6400 Å. Calculate, i. its frequency, ii. Its energy, iiii. Its momentum.

The wavelength of first line in Balmer series is 6563 Å. Calculate the longest and the shortest wavelengths of the first spectral lines in the Lyman series.