The speed of fast-moving neutrons in a nuclear reactor ca...
The speed of fast-moving neutrons in a nuclear reactor can be reduced by using?
graphite rods
concrete shield
iron rods
boron rods
Correct answer is A
Moderation is the process of the reduction of the initial high speed (high kinetic energy) of the free neutron.
Since energy is conserved, this reduction of the neutron speed takes place by transfer of energy to a material called a moderator.
There are several different types of moderating materials, and each have places where they are used more effectively.
Typically-used moderator materials include heavy water, light water, and graphite.
Which of the following electromagnetic waves has the shortest wavelength? ...
From the diagram, the correct equation for the refractive index n of the medium is ...
The internationally agreed system of units(SI) for physical measurements are ...
A body of mass 2kg is released from rest on a plane inclined at an angle of 60° to the hori...
The energy of a photo having a wavelength of 10-10m is (h= 6.63 x 10 -34Js, c =3.0 x 10 8ms-1)...
The area under a velocity-time graph represents ...
Which of the following set of quantities have members which are all vectors? ...
Which of the following statements is true of ultra violet radiations? It ...