Chapter Physics 1
1. For which Diode is used ?(a) modulation(b) oscillation(c) amplification(d) purificationAns: (d) 2. Who among the following developed the technology of underground nuclear explosion ?(a) Dr. Homi J. Bhabha(b) Dr. Vikram Sarabhai(c) Dr. Raja Ramanna(d) Dr. P. K. IyengarAns: (a) 3. Which among the following types of coal produces most heat per unit ?(a) Coal …