Pair production cannot take place in a vacuum as ________________?

Related Mcqs:

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...

The fission chain reaction in a nuclear reactor can be controlled by introducing _______________?

A. Iron rods B. Graphite rods C. Cadmium rods D. Platinum rods...

Which of the following radiations are suitable for the treatment of an infection in the interior of the body ?

A. α-rays B. β-rays C. γ-rays D. X-rays...

Average distance covered by alpha particles in the air before its ionizing power ceases is called its_________________?

A. Trajectory B. Range C. Firing level D. Limit...

The maximum safe limit dose for persons working in a nuclear power station is ________________?

A. 1 rem per week B. 5 rem per week C. 4 rem per week D. 3 rem per week...