Question 2.20: Calculate the wavelength of an electron moving with a velocity of 2.05 × 107 ms-1.
Answer
According to de Broglie’s equation,
Where,
λ = wavelength of moving particle
m = mass of particle
v = velocity of particle
h = Planck’s constant
Substituting the values in the expression of λ:
Hence, the wavelength of the electron moving with a velocity of 2.05 × 107 ms-1 is 3.548 × 10-11 m.
Answer
According to de Broglie’s equation,
Where,
λ = wavelength of moving particle
m = mass of particle
v = velocity of particle
h = Planck’s constant
Substituting the values in the expression of λ:
Hence, the wavelength of the electron moving with a velocity of 2.05 × 107 ms-1 is 3.548 × 10-11 m.
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