A sample of radioactive element has a ma...

A sample of radioactive element has a mass of `10 g` at an instant `t=0`. The approximate mass of this element in the sample after two mean lives is

1.35 g

2.50 g

3.70 g

6.30 g

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

NUCLEI
AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION-D)|10 Videos
NUCLEI
AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION-B)|27 Videos
MOVING CHARGES AND MAGNETISM
AAKASH INSTITUTE ENGLISH|Exercise Assignment Section J (Aakash Challengers Questions)|5 Videos
OSCILLATIONS
AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section D) (ASSERTION-REASON TYPE QUESTIONS)|13 Videos

Similar Questions

Explore conceptually related problems

A sample of a radioactive element has a mass of 10 g at an instant t=0. The approximate mass of this element in the sample left after two mean lives is

A sample of sodium has a mass of 46g. What is the mass of the same number of calcium atoms as sodium atoms present in given sample ?

A certain radioactive element has a half-life of 20 years . If we have a block with 10 g of the element in it, after how many years will there be just 2.5 gm of element in the block

The activity of a sample of radioactive element X^(100) is 6.02 curie. Its decay constant is 3.7 xx 10^(4) s^(-1) . The initial mass of the sample will be a. 10^(-6) g b. 10^(-8) g c. 10^(-20) g d. 10^(-15) g

A sample of sodium has a mass of 46g. What is the mass of the same number of calcium atoms as sodium atoms present in given sample (a) 46 g (b) 20 g (c) 40 g (d) 80 g

A radioactive sample has 6.0 xx 10^18 active nuclei at a certain instant. How many of these nuclei will still be in the same active state after two half-lives?

If the half lives of a radioactive element for alpha and beta decay are 4 year and 12 years respectively, then the percentage of the element that remains after 12 year will be

A radioactive sample has 8.0xx10^(18) active nuclei at a certain instant. How many of these nuclei will still be in the active state after two half-life ("in" xx10^(18)) ?

The half life a radioactive element is 30 days, if the mass of the specimen reduces to 1//10^(th) then the time taken is :-

AAKASH INSTITUTE ENGLISH-NUCLEI-ASSIGNMENT (SECTION-C)

The binding energies per nucleon for a deuteron and an alpha-particle ...
Text Solution
|
The count rate of a Geiger Muller counter for the radiation of a radio...
Text Solution
|
Half-lives of two radioactive substances A and B are respectively 20 m...
Text Solution
|
The correct relation between t(av)=average life and t(1//2)= half life...
Text Solution
|
Nuclear - Fission is best explained by:
Text Solution
|
Half life of radioactive element is 12.5 Hour and its quantity is 256 ...
Text Solution
|
Adssertion:Energy is released in nuclear fission. Reason:Total binding...
Text Solution
|
A sample of radioactive element containing 4 xx 10^16 active nuclei. H...
Text Solution
|
A sample of radioactive element has a mass of 10 g at an instant t=0. ...
Text Solution
|
The half-life of radium is about 1600 yr. Of 100g of radium existing n...
Text Solution
|
.(90)Th^(232) to .(82)Pb^(208). The number of alpha and beta-"particle...
Text Solution
|
A radioactive substance has 10^8 nuclei. Its half life is 30 s . The n...
Text Solution
|
A certain stable nucleide, after absorbing a neutron, emits beta-parti...
Text Solution
|
Pauli suggested the emission of nutrino during beta^+ decay to explain
Text Solution
|
In a radioactive decay, a nucleus is transformed into another with the...
Text Solution
|
If a heavy nucleus has N/Z ratio higher than that required for stabili...
Text Solution
|
The half - life of I^(131) is 8 days. Given a sample of I^(131) at ti...
Text Solution
|
Which of the following is used as a moderator in nuclear reactors?
Text Solution
|
Which of the following are suitable for the fusion process?
Text Solution
|
Solar energy is due to
Text Solution
|