# Recently Active Modern Physics Questions

• Problem: When a photon is emitted from an atom, the atom recoils. The kinetic energy of recoil and the energy of the photon come from the difference in energies between the states involved in the transistion. Suppose, a hydro ...
replied2020-06-10 01:17:57
• Please explain young's double slit experiment in details. ...
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• *Image* How to proceed in this sum..... ...
replied2014-02-19 17:18:06
• Radium(Atomic no. 87 and mass no.221) is a radioactive substance having half life of 4 days.Find the probability that a nucleus undergoes decay after two half lives. A.1 B.1/2 C.3/4 D.1/4 ...
replied2014-01-28 17:42:29
• Radium(Atomic no. 87 and mass no.221) is a radioactive substance having half life of 4 days.Find the probability that a nucleus undergoes decay after two half lives. A.1 B.1/2 C.3/4 D.1/4 ...
replied2014-01-03 18:22:56
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• Nuclei of radioactive element A are produced at rate t2 at any time t.The element A has decay constant Î».Let N be the number of nuclei of element A at any time t.At tinme t=t0 , dN/dt is minimum.Then find the number of nucle ...
replied2012-07-09 01:39:28
• can any one explain me the quantum confinement effect ? ...