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When a uranium isotope $_{92}U$ is bombarded with a neutron, it generates $_{36}Kr$, three neutrons and :

The energy equivalent of $0.5g$ of a substance is :

$α$-particle consists of :

Radioactive material '$A$' has decay constant '$8λ$' and material '$B$' has decay constant '$λ$'. Initially they have same number of nuclei. After what time, the ratio of number of nuclei of material 'B' to that 'A' will be $e$?

For a radioactive material, half-life is $10$ minutes. If initially there are $600$ number of nuclei, the time taken (in minutes) for the disintegration of $450$ nuclei is?

In the reaction $_{1}H+_{1}H→_{2}He+_{0}n$. If the binding energies of $_{1}H,_{1}H$ and $_{2}He$ are respectively $a,b$ and $c$ (in MeV), then the energy(in MeV) released in this reaction is:

The Binding energy per nucleon of $_{3}Li$ and $_{2}He$ nucleon are $5.60MeV$ and $7.06MeV$, respectively. In the nuclear reaction $_{3}Li+_{1}H→_{2}He+_{2}He+Q$, the value of energy $Q$ released is

The half life of a radioactive isotope 'X' is 20 years. It decays to another element 'Y' which is stable. The two elements 'X' and 'Y' were found to be in the ratio 1:7 in a sample of a given rock. The age of the rock is estimated to be

If radius of the $_{13}Al_{27}$ nucleus is estimated to be $3.6fermi$, then the radius of $_{52}Te_{125}$ nucleus nearly