Physics FSC Part 2 Chapter 20 Online MCQ's Test With Answers

image
image
image

Physics FSC Part 2 Chapter 20 Online MCQ's Test

Sr. # Questions Answers Choice
1 Helium-Neon laser discharge tube contains neon 82% 15% 25% 85%
2 Life time of metastable states is 10<sup>-6</sup> sec or more 10<sup>-3</sup> sec or more 10<sup>-5</sup> sec or more None of these
3 Reflecting mirrors in laser is used to Further stimulation For producing more energetic lasers Both (a) and (b) None of these
4 The process by which lesser beam can be used to generate 3-dimensional images of objects is called Holography Geo graphy Tomography Radio graphy
5 An atom can reside in excited state for 10<sup>-8</sup> second One second 10<sup>-10</sup> second More than one second
6 The X-rays diffraction with crystal was first studied by W.H Bragg W.L. Bragg Michelson None of these
7 X-rays were discovered by Curie Henry Becquerel Rontgen None of these
8 The 1st Bohr atom in the hydrogen atom has radius 3.56 x 10<sup>-10</sup> m 0.053 x 10<sup>-11</sup> m 0.53 x 10<sup>-11</sup> m 5.30 x 10<sup>-11</sup> m
9 If the ionization energy of hydrogen atom is 13.6 eV, its ionization potential will be 136.0 volt 3.0 volt 13.6 volt None of these
10 Which of the following is one of the spectral series of atomic hydrogen? Brockett series Balmer series P fund series All of above
11 The value of Rydberg constant is 1.0974 x 10<sup>7</sup> m<sup>-1</sup> 1.0974 x 10<sup>-7</sup> m<sup>-1</sup> 1.0974 x 10<sup>6</sup> m<sup>-1</sup> 1.0974 x 10<sup>-6</sup> m<sup>-1</sup>
12 Study of hydrogen visible spectrum in 1886 1887 1895 1885
13 The first theory about the structure of an atom was introduced by Neil Bohr Einstein Compton Rutherford
Download This Set
×