Consider two nuclei of same radioactive nuclide. One of nuclei was created in a supernova explosion

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13.Nuclei

easy

Consider two nuclei of the same radioactive nuclide. One of the nuclei was created in a supernova explosion $5$ billion years ago. The other was created in a nuclear reactor $5$ minutes ago. The probability of decay during the next time is

Different for each nuclei

Nuclei created in explosion decays first

Nuclei created in the reactor decays first

Independent of the time of creation

Solution

(d) Radioactive decay is a statistical process which depends upon the instability of the particular radioisotope, but which for any given nucleus in a sample is completely unpredictable. It does not depend on the time of creation also.

Standard 12

Physics

The half life period of radium is $1600$ years. The fraction of a sample of radium that would remain after $6400$ years is

medium

(AIPMT-1991)

Mean life of a radioactive sample is $100$ seconds. Then its half life (in minutes) is

medium

In a radioactive reaction $_{92}{X^{232}}{ \to _{82}}{Y^{204}}$, the number of $\alpha – $ particles emitted is

easy

A radioactive sample consists of two distinct species having equal number of atoms $N_0$ initially. The mean-life of one species is $\tau $ and of the other is $5\tau $. The decay products in both cases is stable. The total number of radioactive nuclei at $t = 5\tau $ is

hard

$99 \%$ of a radioactive element will decay between

medium

(AIIMS-2019)

Consider two nuclei of the same radioactive nuclide. One of the nuclei was created in a supernova explosion $5$ billion years ago. The other was created in a nuclear reactor $5$ minutes ago. The probability of decay during the next time is

Solution

Similar Questions

The half life period of radium is $1600$ years. The fraction of a sample of radium that would remain after $6400$ years is

Mean life of a radioactive sample is $100$ seconds. Then its half life (in minutes) is

In a radioactive reaction $_{92}{X^{232}}{ \to _{82}}{Y^{204}}$, the number of $\alpha – $ particles emitted is

A radioactive sample consists of two distinct species having equal number of atoms $N_0$ initially. The mean-life of one species is $\tau $ and of the other is $5\tau $. The decay products in both cases is stable. The total number of radioactive nuclei at $t = 5\tau $ is

$99 \%$ of a radioactive element will decay between

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