Question

Calculate the charge in mass of an object if 800 electrons are given to it. Given : Mass of an electron is 9.1 x 10^ - 31 kg.​

Answer 1

Answer:

We know , KE = ½ mv2

Or

v = (2KE/M)1/2

Or

v = 811.579 m/s

Now putting the values in the de Broglie’s equation

We get

Hence, the wavelength of the electron is 8.9625 × 10–7 m.

Answer 2

Answer:

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