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a piece of wo...

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a piece of wood from an ancient boat was found to show c14 activity of 5counts per minute an equal amountof wood of recent date give a count rate of 20 counts per minute the half life of c14 is 5568 years the age of the boat

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Similar questions

Q. A carbon sample from the frame of picture gives 7 counts of

C^{14}

per minute per gram of carbon. If freshly cut wood gives 15.3 counts of

C^{14}

per minute, calculate the age of frame. (

t_{1 / 2} o f C^{14}

Q. An old sample of wood from an archaeological excavation was found to have a radioactivity of about 140.8 counts per minute due to

^{14} C (t_{1 / 2} = 5730

years) as against 281.6 counts per minute for that of a freshly cut piece of wood. What is the age of the old sample of wood (in millennia, 1 millennium= 1000 years)?

Q. A piece of bone from an archaeological site is found to give a count rate of

15

counts per minute. A similar sample of fresh bone gives a count rate of

19

counts per minute. Calculate the age of the specimen. Given

T_{1 / 2} = 5570 y e a r s

Q. The 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

C^{14}

5730

years, then age of the wooden piece placed in the museum is approximately

Q. Find the age of an ancient Egyptian wooden article (in years) from the given information.
(i) Activity of

1 g

of carbon obtained from ancient wooden article

= 7

counts/min/g
(ii) Activity of

1 g

carbon from fresh wooden sample

= 15.4

counts per min/g
(iii) Percentage increase in level of

C^{14}

due to nuclear explosion in past 100 years is

10

t_{1 / 2}

_{6} C^{14} = 5770

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