Physics FSC Part 2 Online MCQ's Test With Answers

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Physics FSC Part 2 Online MCQ's Test

Sr. # Questions Answers Choice
1 Pair production can take place only when energy of radiation is equal and greater than 1.02 MeV, thus correct option is. X rays Gama rays Heat Radiation Ultraviolet rays
2 Light of 4.5 eV is incident on a Cesium surface and stopping potential is 0.25 eV, maximum K.E. of emitted electron is. 4.5 eV 4.25 eV 4.75 eV 0.25 eV
3 The energy of the photon of wavelength 500 nm is. 3.10 eV 2.49 eV 1.77 eV 1.52 eV
4 The stopping potential for a certain metal is 10 volts. Thus work function for the cathode is. 10 J 1.6 X 10<sup>-18</sup> J 1.6 X 10<sup>-19</sup> J 1.6 X 10<sup>30</sup> J
5 Number of electros emitted in photo electric effect depend upon. Intensity of incident light Frequency of incident light Energy of incident light Wavelength of incident of light
6 Einstein was awarded Nobel prize in physics in 1905 1911 1918 1921
7 By modern system of NAVSTAR, the speed any where on the earth can be determined to accuracy about. 20 ms-1 10 ms-1 2 cms-1 2 ms-1
8 1 kg mass will be equivalent to energy. 9 x 10<sup>8</sup> J 9 X 10<sup>12</sup> J 9 X 10<sup>16</sup> J 9 X 10<sup>19</sup> J
9 The special theory of relativity based on. One postulate Two postulates Three postulates Four postulates
10 The mass of an object will be doubled at speed. 2.6 x 10<sup>8</sup> m/s 1.6 x 10<sup>8 </sup>m/s 2.6 x 10<sup>7 </sup>m/s 3.6 x 10<sup>7</sup> m/s
11 Earth orbital speed is. 10 km/s 20 km/s 30 km/s 40 km/s
12 If an object moves with speed of light, its mass will be. Zero Maximum Minimum infinity
13 In 1905, the special theory of relativity was proposed by Einstein Bohr Maxwell De Broglie
14 Internal frame is a frame is which 1st law holds 2nd law holds 3rd law holds Kelvin's law holds
15 All motions are Absolute Uniform Relative Variable
16 Using relativistic effects the location of an air craft after an hour fight can be predicated about 20 m 50 m 760 m 780 m
17 The device which are required to convert various physical quantities into electric voltage are called. Filters Rectifiers Amplifiers Sensors
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