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Atomic and Nuclear Physics
500 alpha particles of energy 5 MeV enter ionization chamber per second the energy required for ion pair creation is 25 eV. the ionization currently produced is
1)1.6×10^-11
2)9×10^-11
1)1.6×10^-11
2)9×10^-11
Atomic and Nuclear Physics
the intensity ratio of the principal series doublet is
1)1:3
2)2:3
3)2:1
4)1:5
1)1:3
2)2:3
3)2:1
4)1:5
Atomic and Nuclear Physics
The half-life of Yttrium-91 is 59 days. How much of a 90.3 g sample of Yttrium-91 will remain after 324 days?
(answer is in grams, no units required)
(answer is in grams, no units required)
Atomic and Nuclear Physics
I neeed help... I need the answer of some questions kindly help me out.
1 What is the function of neutron in the nucleus of the atom?
2 Is it possible to find the density of protons, neutrons and electrons or just the nuclei?
3 Electrons, as negatively charged particles, not only rotate about the core of atom but also about their own axis (spin) Why this happens?
4 A bird is perched on high voltage power line, why is the bird not electrocuted?
5 Two objects with different masses have the same kinetic energy. Which has the larger magnitude of momentum?
5Is it possible to find the density of protons, neutrons and electrons or just the nuclei?
1 What is the function of neutron in the nucleus of the atom?
2 Is it possible to find the density of protons, neutrons and electrons or just the nuclei?
3 Electrons, as negatively charged particles, not only rotate about the core of atom but also about their own axis (spin) Why this happens?
4 A bird is perched on high voltage power line, why is the bird not electrocuted?
5 Two objects with different masses have the same kinetic energy. Which has the larger magnitude of momentum?
5Is it possible to find the density of protons, neutrons and electrons or just the nuclei?
Atomic and Nuclear Physics
When a molecule rotates centrifugal distortion stitches it bonds the result in
1) no effect on its rotational spectrum 2)The frequencies in its rotational spectrum increases
3) the spectrum line spacing do not remain evenly spaced
4)the moment of inertia of molecule decreases
1) no effect on its rotational spectrum 2)The frequencies in its rotational spectrum increases
3) the spectrum line spacing do not remain evenly spaced
4)the moment of inertia of molecule decreases
Atomic and Nuclear Physics
If the elements with principal quantum number n>4 where not allowed in the nature the number of possible elements would be
1)60
2)32
3)2
4) 64
1)60
2)32
3)2
4) 64
Atomic and Nuclear Physics
Fraunhofer lines in the solar spectrum are due to
Atomic and Nuclear Physics
The mass increase factor (relative to rest mass) is
1) mass increase ratio= 10^10
2)mass increase ratio=10^11
3)mass increase ratio=10
4)mass increase ratio=10²
1) mass increase ratio= 10^10
2)mass increase ratio=10^11
3)mass increase ratio=10
4)mass increase ratio=10²
Atomic and Nuclear Physics
Determine the total number of energy states in silicon between Ev and Ev-kT at T = 300 K. (For Si the effective mass of hole mp* = 0.56m0
Atomic and Nuclear Physics
An electron in the n=2 state of hydrogen remains there on the average about 10^-8s before making a transition to n=1 state the uncertainty in the energy of an n=2 state is
Ans: 4.1×10^-7 ev
Ans: 4.1×10^-7 ev
