Physics FSC Part 2 Chapter 21 Online MCQ's Test With Answers

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Physics FSC Part 2 Chapter 21 Online MCQ's Test

Sr. # Questions Answers Choice
1 The most abundant isotope of neon is: Neon 21 Neon 20 Neon 22 None of above
2 Both xenon and caesium each have: 41 isotopes 36 isotopes 43 isotopes  33 isotopes
3 The total charge of any nucleus is: Ze Z Both a and b None of above
4 The mass of proton in amu is: 1.07276 1.7276 1.007276 1.0007276
5 amu = 1.06 x 10<sup>-27</sup> kg 1.6606 x 10<sup>-27</sup> kg&nbsp; 1.520 x 10<sup>-21</sup> kg 1.6606 x 10<sup>-31</sup> kg
6 The mass of protons is: 1.675 x 10<sup>-27</sup> kg 1.693 x 10<sup>-27</sup> kg 1.673 x 10<sup>-31</sup> kg 1.673 x 10<sup>-27</sup> kg&nbsp;
7 The scientist who suggested the presence of neutron was: Bohr Rutherford Chadwick J.J Thomson
8 Low level radiations effects Less of hair Ulceration Drop of white blood cells All
9 In Wilson cloud chamber, if tracks are thick, straight and continuous, then particle is a-particles ß-particles Y-rays All
10 The energy of photon for photoelectric effect is less than 1 MeV 2 MeV 5 MeV 8 MeV
11 The mass spectrum of naturally occurring neon, showing 1 isotope 2 isotope 3 isotope 4 isotope
12 One joule of energy absorbed per kilogram of a body is Roentgen Grey Rem Curie
13 The potential difference between the top and bottom of a cloud chamber is of the order of 290 v 400 v 1 kv None of above
14 In Wilson cloud chamber, ß-particles leave Thin and continuous tracks Thick and continuous tracks No tracks Thin and discontinuous tracks
15 The first atomic reactor was introduced by Currie Enrico Fermi Newton Bohr
16 The SI unit of decay constant is m m<sup>-1</sup> S<sup>-1</sup> Nm<sup>-1</sup>
17 The radioactive decay obeys the law
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