Physics ICS Part 2 Online MCQ's Test With Answers

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Physics ICS Part 2 Online MCQ's Test

Sr. # Questions Answers Choice
1 Disintegration of photon on striking a nucleus into an electron and positron is known as. Annihilation of matter Compton effect Pair production Photo electric effect
2 The physical quantity related to photon, that does not change in Compton scattering is. Energy Speed Frequency Wavelength
3 Compton's effect is associated with gamma rays Beta rays X rays Positive rays
4 In Compton effect the photon behaves as a. Wave Particle Nucleon Both a and b
5 In Compton scatting, the value of shift is equal to Compton's wavelength, when X-rays is scattered at the angle of. 90<sup>o</sup>C Zero 120<sup>o</sup>C 45<sup>o</sup>C
6 Maximum Compton shift is observed at. 30<sup>o</sup>C 90<sup>o</sup>C 45<sup>o</sup>C 180<sup>o</sup>C
7 The quantity/factor h/moc has the dimensions of. Length Time Mass Energy
8 Compton effect proves. Wave nature of radiation Wave nature of particle Dual nature of particle Particle nature of radiations
9 Photo electrons are emitted y using visible light when the metal is. sodium Copper Nicked Cobalt
10 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
11 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
12 The energy of the photon of wavelength 500 nm is. 3.10 eV 2.49 eV 1.77 eV 1.52 eV
13 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
14 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
15 Einstein was awarded Nobel prize in physics in 1905 1911 1918 1921
16 Potassium Cathodes in photocell emit electrons for a light. Visible Infra red Ultra violet X rays
17 The number of electrons emitted depends upon Colour of target surface Shape of surface Frequency of incident light Intensity of incident light
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