Two thin cylindrical pipes of equal internal diameters made

Last updated: 6/7/2023

Two thin cylindrical pipes of equal internal diameters made of aluminium and plastic are taken The pipes are kept vertical A small cylindrical magn without touching sides of wall of pipe is allowed to fall one by one Then correct observations are A Magnet takes longer time to cross aluminium pipe B Magnet takes longer time to cross plastic pipe C Eddy currents are generated in aluminium pipe but not in plastic D both A and C are correct