Home
Class 12
PHYSICS
Half-life of a radioactive sample is 200...

Half-life of a radioactive sample is 200 days. Its decay constant is

A

138.6/day

B

`3.465 xx 10^(-3)`/day

C

0.005/day

D

`3.545 xx 10^(-2)`/day

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MODEL TEST PAPER 10

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

  • MODEL TEST PAPER 4

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

Define half life of a radiocative sample.

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

The half life period of a radioactive element is 120 days. Starting with 1 g, the amount of element decayed in 600 days will be :

The half life period of a particular isotope is 10 years. Its decay constant is:

The relation between half life T_(1//2) of a radioactive sample and its mean life tau is

Half-life period of a radioactive element is 100 seconds. Calculate the disintegration constant and average life period. How much time will it take for 90% decay?

The half-life period of a radioactive substance is 140 days. After 560 days, one gram of the element will be reduced to:

KCET PREVIOUS YEAR PAPERS-MODEL TEST PAPER 3-(PHYSICS)
  1. Which of the following are not electromagnetic waves ?

    Text Solution

    |

  2. A transistor is used as

    Text Solution

    |

  3. Half-life of a radioactive sample is 200 days. Its decay constant is

    Text Solution

    |

  4. P-type semi-conductor is

    Text Solution

    |

  5. Which one of the following is true?

    Text Solution

    |

  6. In young's double slit experiment, if the distance between the slits i...

    Text Solution

    |

  7. The total magnification produced by a compound microscope is 20. The m...

    Text Solution

    |

  8. If C is the critical angle for a medium and mu is its refractive inde...

    Text Solution

    |

  9. Which of the following relation hold good for refraction between a pa...

    Text Solution

    |

  10. A galvanometer of resistance 25 Omega gives full scale deflection for ...

    Text Solution

    |

  11. A moving charge produces

    Text Solution

    |

  12. Two free paralell wires carrying currents in opposite direction

    Text Solution

    |

  13. In the circuit shown in fig the heat produced in the 5 ohm resistor du...

    Text Solution

    |

  14. In the circuit shown

    Text Solution

    |

  15. When cells are arranged in parallel

    Text Solution

    |

  16. The maximum velocity of a particle executing S.H.M is 0.08 mis. If its...

    Text Solution

    |

  17. The equation of a transverse wave is given by y=20sinpi(0.02x-2t) wher...

    Text Solution

    |

  18. Quality of a sound depends upon its

    Text Solution

    |

  19. First overtone frequency of a closed pipe of length l1 is equal to th...

    Text Solution

    |

  20. Condenser A has a capacity of 15 muF when it is filled with a medium o...

    Text Solution

    |