Home
Class 12
PHYSICS
The half lives of radioactive elements X...

The half lives of radioactive elements `X` and `Y` are `3` minute and `27` minute respectively. If the activities of both are same, then calculate the ratio of number of atoms of X and Y.

Text Solution

Verified by Experts

The correct Answer is:
9
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • NUCLEAR PHYSICS

    CENGAGE PHYSICS|Exercise ddp.5.5|15 Videos

  • PHOTOELECTRIC EFFECT

    CENGAGE PHYSICS|Exercise Integer Type|4 Videos

Similar Questions

Explore conceptually related problems

The half lives of radioactive elements X and Y are 3 mintue and 27 minute respectively. If the activities of both are same, then calculate the ratio of number of atoms of X and Y.

Two radioactive elements X and Y have half-life periods of 50 minutes and 100 minutes, respectively. Initially, both of them contain equal number of atoms. Find the ratio of atoms left N_XIN_Y after 200 minutes.

Knowledge Check

  • Half-lives of two radioactive elements A and B are 20 minutes and 40 minutes respectively. Initially, the samples have equal number of nuclei. After 80 minutes, the ratio of decayed numbers of A and B nuclei will be

    A
    `1 : 4`
    B
    `5 : 4 `
    C
    `1 : 16`
    D
    `4 : 1`

  • Half-lives of two radioactive elements A and B are 20 minutes and 40 minutes respectively. Initially, the samples have equal number of nuclei. After 80 minutes, the ratio of decayed numbers of A and B nuclei will be :

    A
    `4:1`
    B
    `1:4`
    C
    `5:4`
    D
    `1:16`

  • Two radioactive elements X and Y half-live pf 50 and 100 minute respectiv ely. Intial sample of both the elements have same number of atoms. The ratio of the reamaining number of atoms of X and Y after 20 minute is:

    A
    `2`
    B
    `1//2`
    C
    `4`
    D
    `1//4`

    • Similar Questions

    Explore conceptually related problems

    Half lives of two radioactive nuclei A and B are 10 minutes and 20 minutes, respectively. If, initially a sample has equal number of nuclei, then after 60 minutes, the ratio of decayed numbers of nuclei A and B will be:

    Two elements X and Y are isotonic having atomic weight 54 and 56 respectively. If the atomic number of X is 26, then the atomic number of Y will be

    Two radioactive elements X and Y have half lives 6 min and 15 min respectively. An experiment starts with 8 times as many atoms of X as Y. how long it takes for the number of atoms of X left to equal the number of atoms of Y left?

    The half - life period of a radioactive element X is same as the mean - life time of the another radicoactive electront Y initial both of then the same number of atom . Then

    Two radioactive elements X and Y have half-lives of 6 min and 15 min respectively. An experiment starts with 8 time sas many atoms of X as Y. How long it takes for the number of atoms of X left equals the number of atoms of Y left

    Home
    Profile