ETEA MDCAT 2022 PAPER ETEA MDCAT 2022 (PART 11) 1. Which photon is travelling with largest speed in vacuum? Gamma photon Infrared Visible light photon All photons move with the speed of light. 2. The net displacement divided by the total time (t) is known as Uniform velocity Variable velocity Average velocity Instantaneous velocity 3. The half-life of a radio-active sample predicts about: Decay only Disintegration time of half number of atoms Total time for stable atoms Whole life of sample 4. In a conducting electric wire, the electric A. Radioactivity current flows due to Protons Holes lons Electrons 5. The shortest possible wavelength Is Lyman series Brackett series Paschen series Balmer series 6. Which radiation cannot be generated under electron transitions in different orbits? Ultraviolet Y-rays Infrared X-rays 7. Radioactivity does not depend upon: Initial number of atoms Temperature Time Nature of material 8. Which one is not the unit of radio-activity? Decay/second Tesla/m2 Ci Bq 9. Curie is the unit of Half life Transition of magnetism Radioactivity Temperature 10. Which one is stable element in the following? Plutonium Lead Radium Protactinium Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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