Life time of a nucleus in the excited state is 10–12 sec. Calculate the probable uncertainty in energy andfrequency of a g-ray photon emitted by it.

If an excited state of an atom is known to have a lifetime of 10's, what is the uncertainty in the energy of photons emitted by such atoms in the spontaneous decay to the ground state?

Calculate the uncertainty in energy of an unstable elementary particle that has an average life time of 7.2 * 10 ^ - 9 * s

The decay of excited states in atoms and nuclei often leave the system in another, albeit lower-energy, excited state. (a) One example is the decay between two excited states of the nucleus of Ti. The upper state has a lifetime of 1.4 ps, the lower state 3.0 ps. What is the frac tional uncertainty AE/E in the energy of 1.3117-MeV gamma rays connecting the two states?

Spontaneous transition depends ona.Energy of input photonsb.Lifetime of excited statec.Number of atoms in ground state

In part A of the experiment a pair of slits are illuminated with a laser and an interference pattern is observed. The slit spacing is d = (0.100 ± 0.003) mm and the pattern is projected on to the wall a distance L= (2.352 ± 0.006) m from the slits. From a dark spot 8 further dark spots are counted and the distance is measured to be Z = (12.2 ± 0.9) cm.The wavelength of the laser is calculated to be λ = 648 nm.Calculate the uncertainty in the wavelength. Express answer in nm (1x10-9m) to the nearest whole number.