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Is free neutron a stable particle?...

Is free neutron a stable particle?

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Each question contains STATEMENTS-1 (Assertion) and STATEMENT -2 (Reason). Examine the statements carefully and mark the correct answer according to the instructions given below: STATEMENT-1: Neutron are the best bombarding particles. STATEMENT-2: Neutrons are neutral particles.

The increasing order (lowest first) for the values of e//m (charge//mass) for electron (e) , proton (p) , neutron (n) , and alpha particle (alpha) is

Tritium is an isotope of hydrogen whose nucleus Triton contains 2 neutrons and 1 proton. Free neutron decay into p+bare+barv . If one of the neutrons in Triton decays. It would transform into He^3 nucleus. This does not happen. This is because.

A proton, a neutron, an electron and alpha -particle have the same energy. Then their de-Broglie wavelengths compare is

Consider the decay of the free neutron at rest: n = p + e^- . Show that the two-body decay of this type must necessarily give an electron of fixed energy and, therefore, cannot account for the observed continuous energy distribution in the beta decay of a neutron or a nucleus.

A neutron, a proton, an electron and an alpha particle enter a region of constant magnetic field with equal velocities. The magnetic field is along the inward normal to the plane of paper. The tracks of the particles are labelled in Fig. SAQ 11. which of the tracks show the path of the electron and alpha-particles ?

Obtain the de-Broglie wavelength associated with thermal neutrons at room temperature (27^@C) . Hence explain why a fast neutron beam needs to be thermalized with the environment before it can be used for neutron diffraction experiments.

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MODERN PUBLICATION-STRUCTURE OF NUCLEUS-EXERCISE
  1. Is free neutron a stable particle?

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  2. Define atomic number.

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  3. Why is the denstiy of nucleus more than that of the atom?

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  4. Explain any three properties of the nucleus.

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  5. What it Einstein's mass energy relation?

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  6. Define the atomic mass unit?

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  7. Define the atomic mass unit?

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  8. What are nuclear forces ? State their four properties.

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  9. What do you mean by binding energy ? Explain the significance of bindi...

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  10. What do you mean by binding energy ? Explain the significance of bindi...

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  11. State and explain binding energy of a nucleus.

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  12. Draw the graph showing variation of binding energy per nucleon with ma...

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  13. Define binding energy, binding energy per nucleon. Draw and explain a ...

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  14. State and explain mass defect and packing fraction.

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  15. What is mass defect?

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  16. With the help of example explain how the neutron-proton ratio changes ...

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  17. Explain with the help of nuclear reaction in each of the following cas...

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  18. Draw a plot of potential energy of a pair of nucleons as a function of...

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  19. What are nuclear forces ? Discuss fourimportant properties of nuclear ...

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  20. What are nuclear forces ? Discuss fourimportant properties of nuclear ...

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  21. Draw a plot of potential energy of a pair of nucleons as a function of...

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