Home
Class 12
PHYSICS
In a piece of ancient wood C-14 and C-12...

In a piece of ancient wood C-14 and C-12 in this wood at present is `1/8` part of their ratio in the ancient wood. Half-life of `C^14` is 5570 y. What is the age of the wood ?

Text Solution

Verified by Experts

Half -life of `C^14`, T=5570 y .

`therefore` From table, in time 3T, ratio of `C^14` and `C^12` is `r/8` i.e., `1/8` th of the ratio when T=0
`therefore` Age of the piece of wood
=3T = 3 x 5570 = 1670 y
Promotional Banner

Topper's Solved these Questions

  • ATOMIC NUCLEUS

    CHHAYA PUBLICATION|Exercise SECTION RELATED QUESTIONS|54 Videos

  • ATOMIC NUCLEUS

    CHHAYA PUBLICATION|Exercise HOTS QUESTION|14 Videos

  • ATOM

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|18 Videos

  • CAPACITANCE AND CAPACITOR

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|15 Videos

Similar Questions

Explore conceptually related problems

In a piece of ancient wood C -14 and C - 12 are present. the ratio of C -14 and C - 12 in this wood at present is 1/8th part of their ratio in the ancient wood. Half life of C^14 is 5570Y. What is the age of the wood?

A piece of wood was found to have C^(14)/C^(12) ratio 0.7 times that in a living plant.Calculate the period when the plant died. Half-life of C^(14)= 5760 years

A piece of wood from an archaeological sample has 5.0 counts min^-1 per gram of C-14, while a fresh sample of wood has a count of 15.0 min^-1 gram^-1 . If half life of C-14 Is 5770 years, the age of the archaeological sample is

The outer edges of a cuboidal wooden box are 10 cm, 8 cm, 7 cm respectively. The thickness of the box is 1 cm. If the value of 1 cc wood be ₹2, then what will be the making charge of the box ?

The half-life for radioactive decay of .^(14)C is 5730 years . An archaeological artifact containing wood had only 80% of the .^(14)C found in a living tree. Estimate the age of the sample.

In the atmosphere, carbon dioxide is found in two forms, i.e., ^12CO_2 and ^14CO_2 . Plants absord CO_2 during photosynthesis in presence of chlorophyll, plants systhesise glucose 6CO_2 +6 H_2O rarr C_6H_12O_6 + 6O_2uarr Half life of ^14CO_2 is 5760 years. The analysis of wooden artifacts for ^14C and ^12C gives useful information for determination of its age. All living organisms, because of their constant exchange of Carbon dioxide with the surroundings have the same ratio of C-14 to C-12, i.e. 1.3xx10^-12 . When an organism dies, the C-14 in it keeps on decaying as follows: 6^14Crarr7^14N+(-1)^0e +Energy Thus, the ratio of C-14 and C-12 decreases with the passage of time. We can measure the proportion of C-14 in the remains of dead organism and determine how long ago it died. The method of carbon dating can be used to date anything made or organic matter, e.g., bone, skeleton, wood, etc. Using carbon dating, materials have been dated to about 50,000 years with accuracy. A piece of wood from an archeological source shows a C-14 activity which is 60% of the activity found in fresh wood today. The age of archeological sample will be:

A pen stand is made of wood in the shape of cuboid with three conical depressions to hold the pens. The dimensions of the cuboid are 15 cm by 10 cm by 3.5 cm. The radius of each of the depression is 0.5 cm and the depth is 1.4 cm n the entire stand.

Lines 5x + 12y - 10 = 0 and 5x - 12y - 40 = 0 touch a circle C1 of diameter 6. If the center of C1, lies in the first quadrant, find the equation of the circle C2, which is concentric with C1, and cuts intercept of length 8 on these lines

A hole is made in a piece of iron of mass 200 g with the help of a 186.5 W drill. If half of the energy consumed is absorbed as heat by the piece of iron, what will be the increase in its temperature in 1 min? Specific heat of iron = 0.11 cal cdot g^(-1) cdot^(@)C^(-1) .