VISHAL PHYSICS TEST SERIES SEMICONDUCTORS M.M. 25 PASSING MARKS 13 1. Explain the energy band theory with diagram for metals , non metals and semiconductors. 5 2. Derive the formula for resistivity and conductivity of semiconductor. 5 3. Define(i)doping(ii)reverse biasing(iii)p-type semicondutor(iv)forward characterstics(v)rectifier 3*5=15 vishalchauhan888@gmail.com 9855620961