JEE Main Chemistry question

ChemistryStructure of AtomJEE Main

Assuming that the mass of an electron is kg, and the value of Planck's constant is J s, calculate the wavelength (in angstrom) of the electron travelling with a speed of m/s.

Answer: 2.78

Solution

λ = = = 2.78×\ m = 2.78\ Å

Question ID VK-133068