Name of India's first nuclear reactor is

The radiant energy from a red giant star is produced by:

In a nuclear power station,uranium is used for the production of .......

Nuclear fission is best explained by
[$AIPMT$ $2000$]

$A$ nucleus of mass $M + \Delta m$ is at rest and decays into two daughter nuclei of mass $\frac{M}{4}$ and $\frac{3M}{4}$. If the speed of light is $c$,the speed of the daughter nucleus of mass $\frac{M}{4}$ is:

What is nuclear fusion? Explain giving its nuclear equations and write down the definition of thermonuclear fusion.