Physics FSC Part 2 Chapter 19 Online MCQ's Test With Answers

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Physics FSC Part 2 Chapter 19 Online MCQ's Test

Sr. # Questions Answers Choice
1 Max planck received noble prize in: 1927 1932 1918 1914
2 The value of Stefan is constant is: 4.57 x 10<sup>-8</sup> m<sup>2</sup>k<sup>2</sup> 5.67 x10<sup>-8</sup> wm<sup>-2</sup>k<sup>-4</sup> 6.67x 10<sup>-11</sup> wm<sup>2</sup>k<sup>4</sup> 7.45 x &nbsp;10<sup>-9</sup> m<sup>2</sup> wk<sup>3</sup>
3 The value of Wien's constant: 2.9x10<sup>-3</sup>mk 2.19x10<sup>-7</sup>mk 3.18 x10<sup>6</sup> km<sup>-1</sup> 6.21 x 10<sup>-9</sup>m<sup>2</sup>wk<sup>3</sup>
4 A block body is an ideal: Absorber Radiator Both a &amp; b None of above
5 When platinum is heated is become dull red at: 900°C 500°C 800°C 1100°C
6 Compton shift is maximum for scattering angle of photon 0<sup>o</sup> 90<sup>o</sup> 180<sup>o</sup> 45<sup>o</sup>
7 Unit of Stephen's constant is W m K<sup>-2</sup> W m<sup>-2</sup> K<sup>-4</sup> W m K<sup>-4</sup> None
8 The numerical value of Compton wavelength is equal to 3.43 x 10<sup>-12</sup> m 1.43 x 10<sup>-12</sup>m 2.43 x 10<sup>-12</sup>m 0.43 x 10<sup>-12</sup>m
9 The Compton effect is associated with X-rays y-rays Positive rays ß-rays
10 Einstein photoelectric equation is None of these
11 In the equation if f2 > then
12 If the energy of photon is 10 eV and work function is 5 eV, then the a value of stopping potential will be 50 V 2 V 5 V 15 V
13 The unit of work function is Electron volt Ampere Volt cell Hz
14 The photoelectric effect predicts that light is made of Photons Neutrons Protons None of these
15 The uncertainty principle was given by De-Broglie Heisenberg Einstein Max Planck
16
Wien's constant Planck's constant Davison constant Lumber's constant
17 Which one of the following physical quantities change with relativistic speed? Length Time Mass All of above
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