A particle is moving 3 times faster than the speed of an electron. If the ratio of the wavelength of the particle and the electron is 1.8×10−4, then the particle is:
A
neutron
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B
α−particle
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C
deutron
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D
tritium
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Solution
The correct option is A neutron Given:
λparticleλelectron=1.8×10−4 vparticlevelectron=3
According to de-Broglie wavelength, λ=hmv