Tag: NDA Exam II 2019

GK From NDA Exam II 2019

GK From NDA Exam II 2019: 1. In which of the following phenomena do heatwaves travel along a straight line with the speed of light?(A) Thermal conduction(B) Thermal convection(C) Thermal radiation(D) Both thermal conduction and radiation Ans: Thermal radiation (C) 2. When does a ball bounce off the ground, which of the following changes suddenly? (Assume no loss of energy …