Radioactive decay will occur as follows
If a certain mass of radon (Rn = 220) is allowed to decay in a certain container; then after 5 minutes the element with the greater mass will be
radon
polonium
lead
bismuth
A nucleus has mass represented by m (A,Z). If mp and mn denote the mass of proton and neutron respectively and BE the binding energy (in MeV) then.
The half-life period of a radioactive element X is the same as the mean life of another radioactive element Y. Initially, both of them have the same numbers of atoms then,
X and Y have the same decay rate initially
X and Y decay at the same rate always
Y will decay at a faster rate than X
X will decay at a faster rate than Y
The mass of a proton is 1847 times that of an electron. An electron and a proton are injected into a uniform electric field at right angle to the direction of the field with the same initial K.E.
The electron trajectory will be less curved than the proton trajectory.
both the trajectories will be straight
the proton trajectory will be less curved than the electron trajectory.
both the trajectories will be equally curved.
If the energy released in the fission of one nucleus is 3.2x10-11J, then number of nuclei required per second in a power plant of 16 kW is
If an electron has orbital angular momentum quantum number l =7 then it will have an orbital angular momentum equal to
The half-life of a radioactive substance is 3.6 days. How much of 20 mg of this radioactive substance will remain after 36 days?
0.0019 mg
1.019 mg
1.109 mg
0.019 mg
In the reaction given below . How many α and β particles are emitted?
6α, 3β
3α, 4β
4α, 3β
3α,6β
The phenomenon of radioactivity is :
exothermic change which increases or decreases with temperature
increases on applied pressure
nuclear process does not depend on external factors
none of the above
In the reaction, if the binding energies of are respectively a, b and c (in MeV), then the energy in this reaction is released in this reaction is
c + a - b
c - a - b
a + b + c
a +b - c