List of top Physics Questions on Nuclei asked in TS EAMCET

If the masses of proton and neutron are \(m_{p}\) and \(m_{n}\) respectively, the experimental masses of \({}_{2}He^{4}\) and \({}_{8}O^{16}\) nuclei are \(M_{1}\) and \(M_{2}\) respectively, then

The number of alpha and beta decays occurred when \(_{92}^{238}U\) changes to \(_{82}^{206}Pb\) are respectively:

If a radioactive substance decays by 40% and 70% in 10 and 30 minutes respectively, then the time taken for the substance to decay by 50% (in minutes) is:

Electron-positron annihilation produces photons. Momentum of each photon is: (m = $9\times10^{-31}$ kg)

If a thorium nucleus of mass number 232 and atomic number 90 emits six $\alpha$-particles and four $\beta$-particles, then the ratio of number of protons to neutrons in the final nucleus is:

The reason for the constancy of binding energy per nucleon of nuclei whose mass number lies between 30 and 170 is

The ratio of the rate of disintegration and the initial number of nuclei of a radioactive substance is $0.25~hour^{-1}$. The time taken (in hours) for the number of nuclei of this substance to become $\frac{1}{\sqrt{e}}$ times the initial number of nuclei is}

If the nuclear force between a proton and a neutron is attractive, then the distance between them can be:

During the disintegration of a radioactive nucleus of mass number 208 at rest, two alpha particles each with kinetic energy E are emitted. The total kinetic energy of the emitted alpha particles and the daughter nucleus after the disintegration is

When an element $_{90}^{232}\text{Th}$ decays into $_{82}^{208}\text{Pb}$, the number of $\alpha$ and $\beta^{-}$ particles emitted respectively are

If a nucleus P converts into a nucleus Q by the decay of one alpha particle and two $\beta^-$ particles, then the nuclei P and Q are

If a radioactive substance decays 10% in every 16 hours, then the percentage of the radioactive substance that remains after 2 days is

If mass of 5 neutrons is x, mass of 2 protons is y and the mass of the nucleus $_{10}X^{20}$ is z, then the binding energy of the nucleus X is (Speed of light in vacuum is c)

If the half life of an element is 10 minutes, then the time taken (in minutes) for the element to decay from 20% to 80% is

In a nuclear fusion reaction, if the mass defect is 0.25%, then the energy released in the fusion of 400 $\mu$g mass of a substance is

If the mean life of a radioactive sample is 10 minutes, then the time (in minutes) taken for the activity of the radioactive sample to become $\mathrm{e}^{21}$ times its initial activity is

If the energy released in the fission of one uranium nucleus is 200 MeV, then the number of fissions per second required to produce 20 MW is:

If the half-life of a radioactive material is 5 days, then the ratio of the number of atoms disintegrated in 10 and 15 days is:

If the number of uranium nuclei required per hour to produce a power of 64 kW is \(7.2 \times 10^{18}\), then the energy released per fission is

A radioactive material of half-life 2.5 hours emits radiation that is 32 times the safe maximum level. The time (in hours) after which the material can be handled safely is