Nuclear Physics Archives

For chain reaction to build up the size of the radioactive target should be______________?

For chain reaction to build up the size of the radioactive target should be______________?

A. Greater than the critical size
B. Less than the critical size
C. Equal to the critical size
D. All of above can build up a change reaction

One AMU is equal to__________________?

A. 1.66 x 10-27kg
B. 166 x 10-15ng
C. 166 x 10-20g
D. All of above

During fusion of hydrogen into helium________________?

A. Energy is absorbed
B. Energy is released
C. Mass is increased due to energy absorption
D. Mass is reduced due to the energy released

In the nucleus of uranium, the number of neutrons will be _____________?

A. 92
B. 235
C. 143
D. Different for different isotopes

According to which one of following law the density of atom is uniform ?

A. J.J.Thomson model
B. Rutherfords model
C. Bohrs model
D. All of the above laws contradict the statement