The half-life of radium is 6400 years. The fraction of a sample of radium that would remain undecayed after 6400 years is

The half-life of radium is 6400 years. The fraction of a sample of rad

1.	The half-life of radium is 6400 years. The fraction of a sample of radium that would remain undecayed after 6400 years is
A.	1 / 2
B.	1 / 4
C.	1 / 8
D.	1 / 16
Answer» E.

Discussion

No Comment Found

Related MCQs

The ratio of atomic volume to nuclear volume is of the order of
The mass density of a nucleus varies with the mass number A as
Which of the following statements are true ?I . All radioactive elements decay exponentially with timeII . Half-life time of radioactive element is the time required for one half of the radioactive atoms to disintegrate III . Age of the earth can be determined by radioactive dating IV . Half-life time of a radioactive element is fifty percent of its average life period.Select the correct answer using the codes given below
Which of the following nuclei undergo fission when struck by thermal neutrons ?1. U2352. U2383. Pu239Select the correct answer using the codes given below
X210 has half life of 5 days. The time taken for seven-eights of sample of X210 to decay is
The number of atoms of a radioactive substance at t = 0 is 8 x 104. Its half-life period is 4 years. The number of atoms left undecayed will be 1 x 104 after an interval of
Consider the following statements in a nuclear reactor, self sustained chain reaction is possible, because1. More neutrons are related in each of the fission reaction2. The neutrons immediately take part in the fission process3. The fast neutrons are slowed down by graphite4. Every neutron released in the fission reaction initiates fission.Which of these statements are correct ?
Consider the following statements 1. Atom bomb is based upon the principle of uncontrolled nuclear fusion2. Hydrogen bomb is based upon the principle of uncontrolled nuclear fission 3. Nuclear reactor is based upon the principle of controlled nuclear fissionWhich of the statements given above is / are correct ?
Fertile material among the following is
The nuclear 6C13 and 7N14 can be described as

The half-life of radium is 6400 years. The fraction of a sample of radium that would remain undecayed after 6400 years is

Discussion

No Comment Found

Related MCQs

Reply to Comment