Calculate the binding energy per nucleon for a `._(6)C^(12)` nucleus. Atomic mass of `._(6)C^(12) = 12am u`, mass of a photon = 1.007825 amu, mass of a neutron = 1.008665 amu.
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The atomic mass of an element is 50 (i) Calculate the mass of one atom, in amu (ii) Calculate the mass of `6.022xx10^(23)` atoms, in gm (iii) Calculat
(i) 50 amu `" "` (ii) 50 gm (iii) `because` 50 gm of element contains `6.022xx10^(23)` atoms `therefore ` 10 gm of element will contain `(6.022xx10^(23))/(50)xx10=1.2044xx10^(22)` atoms (iv) `because 6.022xx10^(23)`...
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The molecular mass of a compound is 75 (i) Calculate the mass of 100 molecules, in amu. (ii) Calculate the mass of 5000 molecules , in gm. (iii) What
(i) mass of 1 molecules =75 amu `therefore` mass of 100 molecules=7500 amu (ii) Mass of 5000 molecules =`5000xx75` amu `=5000xx75xx1.67xx10^(-24)=6.26 25xx10^(-19)` gm `because 6.022xx10^(20)` molecules weights `(75)/(6.022xx10^(23))xx6.022xx10^(20)=0.075` gm (iv)...
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Photon having energy equivalent to the binding energy of `4th` state of `He^(+)` atom is used to eject an electron from the metal surface of work func
Correct Answer - 5 In the particular excited state of H-atom, path length is five times the de-Broglie wavelength. `:. 2pir=5lambda …(1)` However, path length in a sate `n` is `n`...
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(a) The rest mass energy of an electron is `m_(0)c^(2)=0.51MeV`. Can a photon of this energy create an electron in free space? (A) A single photon of
Correct Answer - (a) No (b) `m_(0)=(h^(2)v^(2))/(2c^(2)[hv-2m_(0)c^(2)])`
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The first excitation potential of sodium atom is 2.1 V. Calculate the longest wavelength of the emitted photon. Will the photon be visible ? To Which
Correct Answer - 5893 Å
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Calculate the binding energy of a deutron. Given that mass of proton = 1.007825 amu mass of neutron = 1.008665 amu mass of deutron = 2.014103 amu
Correct Answer - 2.2 MeV
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Calculate the Q - value of the reaction `._(1)H^(2)+._(1)H^(2) rarr ._(1)H^(3)+._(1)H^(1)` `m(._(1)H^(2))=2.014103 "amu" m(._(1)H^(3))=3.016049 "amu"
Correct Answer - 4.033 MeV
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Calculate the energy released when a single helium nucleus is formed by the fusion of two deuterium nuclei Given `m(._(1)H^(2))=2.01478` amu and `m(._
Correct Answer - 24 MeV
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A hydrogen atom in ground state absorbs a photon of ultraviolet radiation of wavelength `50 nm` Assuming that the entire photon energy is taken up by
Correct Answer - `[11.2eV]`
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Calculate the amount of energy set free by the annigilation of an electron and a positron. Given that mass of electron `= 0.00055` amu and positron =
Correct Answer - 1.0211 MeV
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