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Grade: 11

                        

Calculate (a) the de Broglie wavelength of an electron moving with a velocity of 5.0x 10 5 ms –1 and (b) relative de Broglie wavelength of an atom of hydrogen and atom of oxygen moving with the same velocity (h = 6.63 x 10 –34 kg m 2 s –1 )

5 years ago

Answers : (1)

Sakshi
askIITians Faculty
652 Points
							Hello students..

As we know the de-Broglie wavelength can be written as
λ=h/mv
where h is the Planks constant, m is the mass of the electron and v is the velocity of electron.
On substituting the above values, one can find the value of de broglie wavelength.
For the part 2,
we can write,
λHO = (h*mO*vO)/(mH*vH*h) = (mO/mH) = 16/1=16:1

Hope you find the explaination worth!!!

5 years ago
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