PPSC Physics Full Book With Answers

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PPSC Physics Full Book

Sr. # Questions Answers Choice
1 During the alpha decay process A neutron is emitted a electron is emitted A helium core is emitted A proton core is emitted
2 A body moves with velocity of 2 x 106 m s-1 its relativistic mass becomes Zero Unity Double of its rest mass Infinity
3 Which of the following is invariant under Galilean transformation. Velocity Impulse Momentum Distance
4 The division and germier experiment relates to Diffusion interference Polarization Electron diffraction
5 Cosmic rays mostly comprise of Neutral particles Negative charged particles Positively charged particles Ions
6 Which experiment confirmed the de Broglie hypothesis. <div>Double slit experiment</div> Division germier experiment Schrodinger's Cat experment Bohr's experiment
7 The energy in electron volts necessary to remove the most loosely bound electron from the neutral atom is known as. Faraday energy Wave number Ionization Potential Excitation potential
8 Ionization of a hydrogen atom originally in its ground state takes a minimum out of energy equal to. 2.4 J 4.2 J 12.3 eV 13.6 eV
9 The angular speed of an electron in the nth orbit of Bohr's hydrogen atom is. Directly proportional to n Directly proportional to n2 Inversely proportional to n Inversely proportional to n2
10 LASER beam my be measure very large distance because it is. Inidirectional coherent Monochromatic Not absorbed
11 The usefulness of X rays is largely due to their Mass Density Volume Penetrating power
12 What is the scale for measurement of Banbridge mass spectrograph. Linear Inverse Exponential Logarithmic
13 What is the relativistic version of the Schrodinger equation. Klein Gordon equation Laplace equation Quadratic equation Binomial equation.
14 The energy equivalent of 1 kg of matter a 10<sup>-15</sup> J 1 J 10<sup>12</sup>J 10<sup>17</sup> J
15 In de Brogile model electron orbit must form Spectrum Wave packets Franhoffer lines Clouds
16 The electron behave an waves because They can be diffracted by a crystal They can produce ions in gases They can be deflected by magnetic field They can be deflected by electric field
17 When using the formula E = h lambda what unit should energy have. Joule Watt second Newton metre Electron volt
18 The most convenient unit for energy at the atomic level is. Joule Watt second Newton metre Electron volt
19 Which particle is removed by a photon. Quark Electron Proton Neutron
20 The splitting of atomic energy levels and the associated spectrum lines when the atoms are placed in a magnetic field is called. The photoelectric effect The zeeman effect The Compton effect Quantum effect
21 The exitance of more than one distinct state with the same energy is called. Exigency Degeneracy Normally Emergency
22 Which experiment is a demonstration that matter and energy can display properties of both waves and particles. young's double slit experiment Division germier experiment Heisenberg's uncertainty experiment Stern Gerlach experiment
23 Most widely used types of gas LASER are Neon Argon ion Helium All of these
24 LASER is a device which can produce. Monochromatic beam of light Coherent beam of light An intense beam of light All of the above
25 In an electronic transition atom cannot emit Gama rays Visible rays Infrared rays Ultraviolet rays
26 The total energy of an electron in an orbit around the nucleus is. Zero Unity Infinity Negative
27 The Inner electrons in heavy atoms can be disturbed and dislodged by. X rays Alpha particle Beta particles gama particles
28 In the experiment of production of X rays electrons are accelerated towards the anode by Thermionic emission Potential difference Breaking potential Cut of current
29 In heavy atims the electrons are assumed to be arranged in. Elliptical shells Inner shells Concentric shells Outer shells
30 The continuous x rays spectrum is obtained due to Deceleration of impact electrons Breaking potential Excitation potential Ionization potential
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