Home
Class 12
PHYSICS
Find the amount of heat generated by 1 m...

Find the amount of heat generated by 1 mg of `Po^210` preparation during the mean life period of these nuclei if the emitted alpha particles are known to possess kinetic energy 5.3 MeV and practically all daughter nuclei are formed directly in the ground state.

Text Solution

Verified by Experts

The correct Answer is:
A
`N=(10^-3)/(210)xx6.02xx10^23=2.87xx10^18`
During one mean life period 63.8% nuclei are decayed. Hence, energy released
`E=0.638xx2.87xx10^18xx5.3xx1.6xx10^-13J`
`=1.55xx10^6J`
Promotional Banner

Topper's Solved these Questions

  • MODERN PHYSICS - 2

    DC PANDEY|Exercise Level 2 Comprehension Based|3 Videos

  • MODERN PHYSICS - 1

    DC PANDEY|Exercise Level 2 Subjective|23 Videos

  • NUCLEI

    DC PANDEY|Exercise C MADICAL ENTRANCES GALLERY|46 Videos

Similar Questions

Explore conceptually related problems

Find the amount of heat generated by 1.00 mg of a Po^(210) preparation during the mean lifetime period of these nuclei of the emitted alpha-particles are known to possess the kinetic energy 5.3MeV and practically all daughter nuclei are formed directly in the ground state.

The amount of heat generated by 1.0 mg of a Po^(210) preparation during the one mean lifetime period of there nuclei, if the emitted a-particles are known to possess the kinetic energy 5.3 MeV is n(0.2 MJ) . Assume all daughter nuclei are partically formed in ground state. What is the value of n ?

Taking the values of atomic masses from the tables, find the maximum kinetic energy of beta-particles emitted by Be^(10) nuclei formed directly in the ground state.

The alpha- decay of .^(210)Po nuclei (in the ground state) is accompanied by emission of two groups of alpha- particles with kinetic energies 5.30 & 4.50 MeV. Following the emission of these particles the daughter nuclei are found in the ground & excited states. find the energy of gamma-quanta emtted by the excited nuclei.

The alpha -decay of nucleus X^(230) is accompanied by emission of two groups of alpha- particles-one group having alpha- particles of kinetic energy 6.7MeV and other having alpha -particles of kinetic energy 5.2 MeV. Following the emission of these particles the daugheter muclei are found in ground and exiceted states. find the energy of gamma photon. that is subsequenctly emitted by de-exictation of the excited daughter nuclei. Assume that nuclei of X^(230) are at rest.

A nucleus of mass 220 amu in the free state decays to emit an alpha -particle . Kinetic energy of the alpha -particle emitted is 5.4 MeV. The recoil energy of the daughter nucleus is

Evaluate the amount of heat produced during a day by a beta^(-) - active Na^(24) preparation of mass m= 1.0 mg . The beta particles are assumed to possess an average kinetic energy equal to 1//3 of the highest possible energy of the given decay. The half-life of Na^(24) is T= 15 hours .

The nucleus of an atom of ._(92)Y^(235) initially at rest decays by emitting an alpha particle. The binding energy per nucleon of parent and dougther nuclei are 7.8MeV and 7.835MeV respectively and that of alpha particles is 7.07MeV//"nucleon" . Assuming the dougther nucleus to be formed in the unexcited state and neglecting its share of energy in the reaction, calculate speed of emitted alpha particle. Take mass of alpha particle to be 6.68xx10^(-27)kg .