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CBSE Class 12-science Answered

An electron and a proton have same kinetic energy. Which of the two has a greater wavelength? Explain.
Asked by Tripurari | 08 Jan, 2018, 08:48: AM
answered-by-expert Expert Answer
According to debroglie wavelength equation λ = h / (mv) , wavelength is inversly proportional to mass. since mass of electron is much less compare to mass of proton, electron's wavelength is more
Answered by | 08 Jan, 2018, 10:41: AM

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CBSE 12-science - Physics
if breakdown voltage of each capacitor is 40v ,then maximum applied voltage Vmax will be
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CBSE 12-science - Physics
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CBSE 12-science - Physics
The number of moles in an elemental sample is just the ratio of the mass m to atomic mass 4. n= A The number of protons N, in an elemental sample is Z (atomic number) times the number of moles of Avogadro's number NA N=ZnN P A Copper has an atomic mass of 63.5 g/mole and 29 protons per atom. If such an atom were neutral, then it would have as many protons as electrons. If you remove electrons from a neutral state, then you get a net positive charge. Given a 54 gram ball of copper with a net charge of 2.2 µC, what fraction of the copper's electrons have been removed?
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CBSE 12-science - Physics
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CBSE 12-science - Physics
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CBSE 12-science - Physics
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