Two nuclei have radii ratio R2/R1=2R2/R1=2. What is A2/A1A2/A1? A C. 8 B A. 2 C B. 4 D D.
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Chapter 25: Nuclear Physics and Particle Physics (Set-4)
A nucleus has radius 4.8 fm. What is the approximate mass number A? A 64 B 27 C 125 D
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A nucleus has mass defect 0.02 u. What is its binding energy roughly? A 18.6 MeV B 0.02 MeV C
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Which quantity mainly explains nearly constant nuclear density across nuclei? A Electron cloud B Nuclear forces C Coulomb force D
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What mainly determines an approximate nuclear radius? A Number of neutrons B Atomic number Z C Mass number A D
Continue readingChapter 24: Semiconductor Devices and Electronic Circuits (Set-5)
A silicon diode carries 1 mA at 0.62 V. Assuming n = 1, Vt = 26 mV, the current at
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For a silicon diode at 300 K, the thermal voltage (Vt) is closest to A 5 mV B 0.26 V
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When forward current in a diode increases, its dynamic resistance generally A Increases sharply B Becomes infinite C Stays constant
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In a p–n junction at equilibrium, diffusion current is balanced by which current? A Drift current B Convection current C
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In an unbiased p–n junction, what forms near the junction due to diffusion? A Conduction band B Depletion region C
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