Cathode Rays Cathode rays are the stream of fast moving electrons. These rays are produced in a discharge tube at a pressure below 0.01 rom of mercury. Properties of Cathode Rays Cathode rays are...
Current Electricity: Electric Current (I): The rate of flow of charge through any cross-section of a wire is called electric current flowing through it. Electriccurrent (I) = q / t. Its SI unit is ampere...
1.What is light? Ans:Light is a form energy, which gives sensation ofof sig. 2.What is transparent medium? Ans:A medium through which light can propagate easily. Eg-glass, bottle, bulb etc 3.What...