Home
Class 12
PHYSICS
A mixture consists of two radioactive ma...

A mixture consists of two radioactive materials `A_1` and `A_2` with half lives of 20s and 10s respectively . Intially the mixture has 40g of `A_1` and 160 g of `A_2` . The amount of the two in the mixture will become equal after:

A

80s

B

20s

C

40 s

D

60s

Text Solution

Verified by Experts

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    SARAS PUBLICATION|Exercise EXAMPLE|42 Videos

Similar Questions

Explore conceptually related problems

Half live of two radioactive elements A and B are 20 minutes and 40 minutes respectively. Initially, the samples have equal number of nuclei. Calculate the ratio of decayed numbers of A and B nuclei after 80 minutes.

Half lives of two radioactive elements A and B are 20 minutes and 40 minutes respectively. Initially, the samples have equal number of nuclei. Calculate the ratio of decayed numbers of A and B nuclei after 80 minutes.

Knowledge Check

  • If same force is acting on two masses m_1 and m_2 and the accelerations of two bodies are a_1 and a_2 respectively, then

    A
    `a_2/a_1 = m_2/m_1`
    B
    `a_1/a_2 = m_1/m_2`
    C
    `a_1/a_2 = m_2/m_1`
    D
    `m_1 a_1 + m_2 a_2 = 0`

  • Two masses m, and m, are experiencing the same force where m_1 lt m_2 . The ratio of their acceleration a_1/a_2 is

    A
    1
    B
    less than 1
    C
    greater than 1
    D
    all the three cases

  • Two masses m_1 and m_2 are experiencing the same force where m_1 lt m_2 . The ratio of their acceleration a_1/a_2 is

    A
    1
    B
    less than 1
    C
    greater than 1
    D
    all the three cases

    • Similar Questions

    Explore conceptually related problems

    Half lives of two radioactive elements A and B are 20 minutes and 40 minutes respectively. Initially, the sample have equal number of nuclei.Calculate the ratio of decayed numbers of A and B nuclei after 80 minutes.

    Half lives of two radioactive elements A and B are 20 minutes and 40 minutes respectively. Initially, the samples have equal number of nuclei. Calculate the ratio of decayed numbers of A and B nuclei after 80 minutes.

    Half lives of two radioactive elements A and B are 20 minutes and 40 minutes respectively. Initially, the samples have equal number of nuclei. Calculate the ratio of decayed numbers of A and B nuclei after 80 minutes.

    Calculate the partial pressures of O_2 and H_2 in a mixture of 3 moles of O_2 and 1 mole of H_2 at S.T.P.

    A mixture contains two components A and B. The solution of A and B in water near their boiling points are 10 gram per 100 mL and 2 gram per 100 mL respectively. How will you separate A and B from the mixtures?

    Home
    Profile