Find the :
minimum wavelength of X-rays produced by 30 kV electrons.

Find the : maximum frequency of X-rays produced by 30 kV electrons.

The maximum wavelength of radiation that can produce photoelectric effect in a certain metal is 200 nm . The maximum kinetic energy acquired by electron due to radiation of wavelength 100 nm will be

Find the de-Broglie wavelength associated with an electron moving with velocity 0.3 c. rest mars of electron, m0 = 9.1 ×10–31 (k/s) h = 6.63 × 10–34 Js)

Explain what do you understand by the de Broglie wavelength of an electron. Will an electron at rest have an associated de Broglie wavelength? Justify your answer.

Find the ratio of the de Broglie wavelengths of an electron and a proton when both are moving with the : same momentum. State which of the two will have the longer wavelength in each case?

Find the ratio of the de Broglie wavelengths of an electron and a proton when both are moving with the : same energy . State which of the two will have the longer wavelength in each case?

Find the ratio of the de Broglie wavelengths of an electron and a proton when both are moving with the same speed . State which of the two will have the longer wavelength in each case .

The minimum audible wavelength at room temperature is about