Equal masses of two samples A and B of charcoal are burnt and the activity of resulting carbon dioxide from two samples is measured. The gas from sample A gives 104 counts per month and that from sample B gives 2.5 x103counts per month. The age difference of two samples is ( half life of C14 is 5730 years)
5730 years
11460 years
17190 years
22920 years
A
11460 years
B
22920 years
C
5730 years
D
17190 years
Open in App
Solution
Verified by Toppr
Rate of gas A =104counts/month=λN1
Was this answer helpful?
1
Similar Questions
Q1
Equal masses of two samples A and B of charcoal are burnt and the activity of resulting carbon dioxide from two samples is measured. The gas from sample A gives 104 counts per month and that from sample B gives 2.5 x103counts per month. The age difference of two samples is ( half life of C14 is 5730 years)
View Solution
Q2
Equal masses of two samples of charcoal A and B are burnt separately and the resulting carbon dioxide are collected in two vessels. The radioactivity of 14C is measured for both the gas samples. The gas from the charcoal A gives 2100 counts per week and the gas from the charcoal B gives 1400 counts per week. Find the age difference between the two samples. Half-life of 14C = 5730 y.
View Solution
Q3
Equal masses of two samples of charcoal A and B are burnt separately and the resulting carbon dioxide are collected in two vessels. The radioactivity of 14C is measured for both the gas samples. The gas from the charcoal A gives 2100 counts per week and the gas from the charcoal B gives 1400 counts per week. Find the age difference between the two samples. Half-life of 14C = 5730 y.
View Solution
Q4
A carbon sample from the frame of picture gives 7 counts of C14 per minute per gram of carbon. If freshly cut wood gives 15.3 counts of C14 per minute, calculate the age of frame. (t1/2ofC14 = 5570 years)
View Solution
Q5
An old sample of wood from an archaeological excavation was found to have a radioactivity of about 140.8 counts per minute due to 14C(t1/2=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)?