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Let u denote one atomic unit .one atom o...

Let u denote one atomic unit .one atom of an element of mass number A has mass exactly equal A u

A

for any value of A

B

only for A=1

C

only for A= 2

D

for any value of A provided the atom is stable

Text Solution

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The correct Answer is:
C
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MOTION-RADIOACTIVITY & NUCLEAR PHYSICS-Exercise -1
  1. The reason of origin of gamma- rays is

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  2. A radioactive material of half-life T was kept in a nuclear reactor at...

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  3. Let u denote one atomic unit .one atom of an element of mass number A ...

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  4. The surface area of a nucleus varies with mass number A as

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  5. In the nuclear reaction .92 U^238 rarr .z Th^A + .2He^4, the values of...

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  6. Among gravitational, electrostatic and nuclear forces, the two attract...

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  7. the radius of ""(29)Cu^(64) nucleus in fermi is (given ,r(0) 1.2xx1...

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  8. In most stable nuclei neutron number N and proton number Z has the rel...

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  9. The correct relation between the packing fraction f and mass n...

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  10. Let Fpp, Fpn and Fnn denote the magnitudes of the nuclear force by a p...

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  11. The correct statement about nuclear forces is

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  12. The graph between the binding energy per nucleon (E) and atomic mass n...

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  13. Attractive nuclear forces exist between -

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  14. The radius of the nucleus with nucleon number 2 is 1.5 xx 10^(-15)m, t...

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  15. If there are N nucleons in a nucleus of radius R, then the number of n...

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  16. Which of the following is not the property of atomic nucleus ?

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  17. The mass number of a nucleus is

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  18. Two protons are kept at a separation of 50Å. Fn is the nuclear force a...

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  19. Most of the stable nuclides have -

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  20. As the mass number A increases, which of the following quantities rela...

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