Home
Class 12
PHYSICS
A^(238) Unucleus decays by emitting an a...

`A^(238) U`nucleus decays by emitting an alpha particle of speed `ums^(-1)` The recoil speed of the residual nucleus is: (in `ms^(-1)`)

A

`(4v)/(238)`

B

`-(4v)/(238)`

C

`(v)/(4)`

D

`-(4v)/(234)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - B)|35 Videos

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - C)|80 Videos

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE ENGLISH|Exercise EXERCISE|37 Videos

  • WAVES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT ( SECTION-D ( Assertion - Reason Type Questions ))|12 Videos

Similar Questions

Explore conceptually related problems

which a U^(238) nucleus original at rest , decay by emitting an alpha particle having a speed u , the recoil speed of the residual nucleus is

which a U^(238) nucleus original at rest , decay by emitting an alpha particle having a speed u , the recoil speed of the residual nucleus is

A uranium 238 nucleus, initially at rest emits an alpha particle with a speed of 1.4xx10^7m/s . Calculate the recoil speed of the residual nucleus thorium 234. Assume that the mas of a nucleus is proportional to the mass number.

A uranium 238 nucleus, initially at rest emits n alpha particle with a speed of 1.4xx10^7m/s . Calculate the recoil speed of the residual nucleus thorium 234. Assume that the mass of a nucleus is proportional to the mass number.

A radioactive nucleus of mass number A, initially at rest, emits an alpha- particle with a speed v. What will be the recoil speed of the daughter nucleus ?

._(92)^(238)U has 92 protons and 238 nucleons. It decays by emitting an alpha particle and becomes:

A nucleus of ._84^210 Po originally at rest emits alpha particle with speed v . What will be the recoil speed of the daughter nucleus ?

A nucleus of ._84^210 Po originally at rest emits alpha particle with speed v . What will be the recoil speed of the daughter nucleus ?

A nucleus ""^(220)X at rest decays emitting an alpha -particle . If energy of daughter nucleus is 0.2 MeV , Q value of the reaction is

During alpha-decay , a nucleus decays by emitting an alpha -particle ( a helium nucleus ._2He^4 ) according to the equation ._Z^AX to ._(Z-2)^(A-4)Y+._2^4He+Q In this process, the energy released Q is shared by the emitted alpha -particle and daughter nucleus in the form of kinetic energy . The energy Q is divided in a definite ratio among the alpha -particle and the daughter nucleus . A nucleus that decays spontaneously by emitting an electron or a positron is said to undergo beta -decay .This process also involves a release of definite energy . Initially, the beta -decay was represented as ._Z^AX to ._(Z+1)^AY + e^(-)"(electron)"+Q According to this reaction, the energy released during each decay must be divided in definite ratio by the emitted e' ( beta -particle) and the daughter nucleus. While , in alpha decay, it has been found that every emitted alpha -particle has the same sharply defined kinetic energy. It is not so in case of beta -decay . The energy of emitted electrons or positrons is found to vary between zero to a certain maximum value. Wolfgang Pauli first suggested the existence of neutrinoes in 1930. He suggested that during beta -decay, a third particle is also emitted. It shares energy with the emitted beta particles and thus accounts for the energy distribution. During beta^+ decay (positron emission) a proton in the nucleus is converted into a neutron, positron and neutrino. The reaction is correctly represented as

AAKASH INSTITUTE ENGLISH-WORK, ENERGY AND POWER-Assignment (SECTION - A)
  1. Two bodies with masses m1 kg and m2 kg have equal kinetic energies. If...

    Text Solution

    |

  2. The K.E. acquired by a mass m in travelling a certain distance d, star...

    Text Solution

    |

  3. A^(238) Unucleus decays by emitting an alpha particle of speed ums^(-1...

    Text Solution

    |

  4. The total work done on a particle is equal to the change in its kineti...

    Text Solution

    |

  5. Potential energy is defined

    Text Solution

    |

  6. A stick of mass m and length l is pivoted at one end and is displaced ...

    Text Solution

    |

  7. A spring with spring constaant k when compressed by 1 cm the PE stored...

    Text Solution

    |

  8. Two springs have spring constants k(1)and k(2) (k(1)nek(2)). Both are ...

    Text Solution

    |

  9. Initially mass m is held such that spring is in relaxed condition. If ...

    Text Solution

    |

  10. A block of mass m moving with velocity v(0) on a smooth horizontal sur...

    Text Solution

    |

  11. For a particle moving under the action of a variable force, kinetic en...

    Text Solution

    |

  12. A particle of mass 1 kg is subjected to a force which varies with dist...

    Text Solution

    |

  13. An unloaded bus can be stopped by applying brakies on straight road af...

    Text Solution

    |

  14. The power of water pump is 4 kW. If g=10 ms^(-2), the amount of water ...

    Text Solution

    |

  15. A particle moves with the velocity vecv=(5hati+2hatj-hatk)ms^(-1) unde...

    Text Solution

    |

  16. A body is projected from ground obliquely. During downward motion, pow...

    Text Solution

    |

  17. The blades of a windmill sweep out a circle of area A. If the wind flo...

    Text Solution

    |

  18. A body of mass m, accelerates uniformly from rest to V(1) in time t(1)...

    Text Solution

    |

  19. The power of a pump, which can pump 500 kg of water to height 100 m in...

    Text Solution

    |

  20. A pump is used to pump a liquid of density rho continuously through a ...

    Text Solution

    |