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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Find the typical de Broglie wavelength associated with a He atom in helium gas at room temperature (27 C) and 1 atm pressure; and compare it with the mean separation between two atoms under these conditions.

Find the typical de Broglie wavelength associated with a He atom in helium gas at room temperature (27 C) and 1 atm pressure; and compare it with the mean separation between two atoms under these conditions.

A monochromatic light of wavelength lemda is incident on an isolated metallic sphere of radius a. The threshold wavelength is lemda 0 which is greater than lemda. Find the number of photoelectrons