Tender For procurement of instrument for the department of physics at permanent campus, nehu, shillong - faraday effect with he-ne laser ( as per specifications given in the tender document ), study of the relationship between wavelengths of microwave in cavity using gun diode source ( as per specifications given in the tender document ), spin coater ( as per specifications given in the tender document ), fiber optics kit with accessories optical bench with riders (1 mtr) ( as per specifications given in the tender document )