Which of the following materials is necessary to stop a beta particle?
a.

three feet of concrete

c.

a sheet of metal foil
b.

three inches of lead

d.

single sheet of paper

Question

Which of the following materials is necessary to stop a beta particle?
a.
	
three feet of concrete
	
c.
	
a sheet of metal foil
b.
	
three inches of lead
	
d.
	
single sheet of paper

anonymous · Answer

beta particles can only be stopped after traveling through about 10 feet of air,  less than 2 inches of water, or a thin layer of glass or metal. Additional covering, for example heavy clothing, is necessary to protect against beta- emitters. Some beta particles can penetrate and burn the skin....

anonymous · Answer

so ans will be metal foil...