Home
Class 12
PHYSICS
Obtain the amount of ""(27)^(60)Co neces...

Obtain the amount of `""_(27)^(60)Co` necessary to provide a radioactive source of 8.0 mCi strength. The half-life of `""_(27)^(60)Co` is 5.3 years.

Text Solution

Verified by Experts

`7.126 xx 10^(–6)` g
Promotional Banner

Topper's Solved these Questions

  • NUCLEI

    NCERT BANGLISH|Exercise ADDITIONAL EXERCISES|8 Videos

  • NUCLEI

    NCERT BANGLISH|Exercise ADDITIONAL EXERCISES|8 Videos

  • MOVING CHARGES AND MAGNETISM

    NCERT BANGLISH|Exercise ADDITIONAL EXERCISES|16 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    NCERT BANGLISH|Exercise EXERCISES|38 Videos

Similar Questions

Explore conceptually related problems

The half - life period of ""_(53)I^(125) is 60 days. The radioactivity after 180 days will be

At 1000K temperature CO_(2) has a pressure of 0.5 atm in a closed container. On adding some amount of graphite inside the container, some amount of CO_(2) is converted to CO. at equilibrium the pressure becomes 0.8 atm. Find out the value of K_(p) .

Calculate the number of kJ of heat necessary to raise the temperature of 60.0 g of aluminium from 35^@C to 55^@C . Molar heat capacity of Al is 24 J mol^-1 K^-1 . Molar mass of Al =27g mol^-1 .

The initial number of radioactive atoms in a radioactive sample is N_0 . If after time t the number of becomes N, then N=N_0e^(-lambdat) , where lambda is known as the decay constant of the element. The time in which the number of radioactive atoms becomes half of its initial number is called the half-life (T) of the element. The time in which the number of atoms falls to 1/e times of its initial number is the mean life (tau) of the element. The product lambdaN is the activity (A) of the radioactive sample when the number of atoms is N. The SI unit of activity is bequerel (Bq)' where 1 Bq = 1 decay. s^(-1) . The half-life of Iodine-131 is 8 d. Its mean life (in SI) is - (A) 4.79xx10^5 s. (B) 6.912xx10^5 s. (C) 9.974 xx 10^5 s. (D) 22.96xx10^5 s.

The initial number of radioactive atoms in a radioactive sample is N_0 . If after time t the number of becomes N, then N=N_0e^(-lambdat) , where lambda is known as the decay constant of the element. The time in which the number of radioactive atoms becomes half of its initial number is called the half-life (T) of the element. The time in which the number of atoms falls to 1/e times of its initial number is the mean life (tau) of the element. The product lambdaN is the activity (A) of the radioactive sample when the number of atoms is N. The SI unit of activity is bequerel (Bq)' where 1 Bq = 1 decay. s^(-1) . The half-life of Iodine-131 is 8 d. What is the activity (in Bq) of 1 g of Iodine? (A) 2.3xx10^15 (B) 4.6xx10^15 (C) 6.9xx10^15 (D) 9.2xx10^15

What is the mass of sodium bromate and molarity of the solution necessary to prepare 85.5 mL of 0.672 N solution when the half reaction is, BrO_3^(-)+6H^++6erarrBr^(-)+3H_2O (Atomic mass of Br = 80)

27g Al is discharged , when 0.5 A current is passed through molten AlCl^(3) . Calculate ( 1 ) the number of gram equivalents of Al discharged ( ii ) the number of gram atoms of Al discharged ( iii ) the number of molecules of Al discharged ( iv ) the number of electrons that took part in the process ( v ) the amount of electricity ( in F ) that was used ( vi ) the duration of passage of electricity ( vil ) the volume of Cl_(2) , ( in L ) produced at STP .

What amount of CaCO_(3) will be just sufficient to produce 1 L of CO_(2) at 27^(@)C and 760 mmHg pressure? Determine the quantity of pure carbon requried to yield the same amount of CO_(2) .

(i) At 1000 K temperature CO_2 has pressure fo 0.5 atm in a closed container. On adding some amount of graphite inside the container some amount of graphite inside the container. some amount of CO_2 is converted to CO. At equilibrium the pressure becomes 0.8 atm. Find out the value of k_p

The given reaction is carried out in a closed vessel: CaCO_(3)(s)hArr CaO(s)+CO_(2)(g), DeltaH^(0) gt0 . What would be the effect of the following changes on the equilibrium of the reaction if (1) solid CaCO_(3) is added to the reaction system, (2) some amount of CaO is removed from the reaction system, (3) CO_(2)(g) is introduced into the reaction system at constant volume and temperature., (4) temperature is increased, and (5) volume of the reaction vessel is reduced at constant temperature.

NCERT BANGLISH-NUCLEI-EXERCISE
  1. Obtain the binding energy (in MeV) of a nitrogen nucleus (""(7)^(14)N)...

    Text Solution

    |

  2. Obtain the binding energy of the nuclei ""(26)^(56)Fe and ""(83)^(209)...

    Text Solution

    |

  3. A given coin has a mass of 3.0 g. Calculate the nuclear energy that wo...

    Text Solution

    |

  4. Write nuclear reaction equations for {:((i) a-"decay of " (88)^(226)...

    Text Solution

    |

  5. A radioactive isotope has a half-life of T years. How long will it tak...

    Text Solution

    |

  6. The normal activity of living carbon-containing matter is found to be ...

    Text Solution

    |

  7. Obtain the amount of ""(27)^(60)Co necessary to provide a radioactive ...

    Text Solution

    |

  8. The half-life of ""(38)^(90)Sr is 28 years. What is the disintegration...

    Text Solution

    |

  9. Obtain approximately the ratio of the nuclear radii of the gold isotop...

    Text Solution

    |

  10. Find the Q-value and the kinetic energy of the emitted a-particle in t...

    Text Solution

    |

  11. The radionuclide ""^(11)C decays according to ""(6)^(11)C to ""(5)^(...

    Text Solution

    |

  12. The nucleus ""(10)^(23)Ne decays by beta^(-)– mission. Write down the ...

    Text Solution

    |

  13. The Q value of a nuclear reaction A + b to C + d is defined by Q =...

    Text Solution

    |

  14. Suppose, we think of fission of a ""(26)^(56)Fe nucleus into two equal...

    Text Solution

    |

  15. The fission properties of ""(94)^(239)Pu are very similar to those of ...

    Text Solution

    |

  16. A 1000 MW fission reactor consumes half of its fuel in 5.00 y. How muc...

    Text Solution

    |

  17. How long can an electric lamp of 100W be kept glowing by fusion of 2.0...

    Text Solution

    |

  18. Calculate the height of the potential barrier for a head on collision ...

    Text Solution

    |

  19. From the relation R = R0A^(1//3), where R0 is a constant and A is the ...

    Text Solution

    |

  20. For the b+ (positron) emission from a nucleus, there is another compet...

    Text Solution

    |