Question

50. A piece of wood from a recently cut tree shows 20 decays
per minute. A wooden piece of same size placed in a museum
(obtained from a tree cut many years back) shows 2 decays
per minute. If half life of C14 is 5730 years, then age of the
wooden piece placed in the museum is approximately:
(a) 10439 years (b) 13094 years
(c) 19039 years
(d) 39049 years​

Answer 1

Answer:

C) 19039 years

Hope it helps you

Answer 2

then age of thewooden piece placed in the museum is approximately19039 yr

recently cut tree N=20per min

=20/60persec

=1/3persec

*A wooden piece of same size placed in a museum.

N=2 PER MIN

=2/60PERSEC

=1/30per sec

A=Aoe-^t

2=2oe-^t

t=log2/1/2

t=19039 year