Question

moving electron has de-Broglie's wavelength of 7x10^-7 m. calculate its kinetic energy Plank's constant= 6.626x10 1is, mass of an electron= 9.1x10"kg)​

Answer 1

Answer:

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Explanation:

per the NCERT textbook, the question is "a moving electron has 5x10-25 J of kinetic ... mass of electron = 9.1 x 10-31 kg ... Now, Planck's constant h = 6.62 x 10- 34 Js = 6.62 x 10-34 kg m2 s-1 ... λ = 6.9 x 10-7 m.