This set of Electronic Devices and Circuits Multiple Choice Questions & Answers (MCQs) focuses on “The Hall Effect”. 2 the diagram of Hall Effect (the carriers are positive charges) The diagram of Hall Effect is shown in Fig. Labels: interferometer, physics viva questions, physics viva questions and answers, ultrasonic, Ultrasonic Interferometer, viva, viva questions 28 comments: Unknown May … c) 0.2m/s What is the conductivity when the Hall Effect coefficient is 5 and mobility is 5cm2 /s. View Answer, 3. Yes, the fringes equispaced. Viva Questions for HALL Effect. 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