physical quantity si units system and their measurements in hind

physics general knowledge (gk) in hindi pdf apps- list of si units system, units of measurement, definitions of si units, si units table, si unit for temperature, si unit of weight, si units pressure, fundamental quantities and their units and symbols, physical quantities and measurement, dimension of torque, measurements in physics- principal of vernier calliperse, screw gauge, spherometer, stop watch, physical balance etc.