The instrument should have following features:

• Adjustment of entrance slit isprovided

• Prism table for accurate componentplacement

• Crosswire- Eyepiece

• Wideapertureoptics

• Rack and pinion arrangementfocusing

• Online product tutorials and manual should be available to perform lab experiments by following step-by-step experimental procedure. 

Technical Specifications:
Base: 

• Type Cast iron 

• Circle dia : 150 mm. (6”) 

• Scale Type : Stainless Steel 

• Main scale : 0 - 360° 

• Vernier scale : 30 div 

• Least Count : 20” 

• Collimator Tube length : 160mm. 

• Focal length of Achromatic lens : 175mm (approx.) 

• Telescope Tube length : 185 mm. 

• Focal length of Achromatic lens: 175 mm. (approx.) 

• Prism Geometry : 5050mm. equilateral 

• Refractive index : 1.51 

• Hollow prism : 5050mm.equilateral 

• Plane transmission grating : 15,000 l/inch 

• Light source : Mercury lamp 

Experiments that can be performed:

• To determine the Wavelength of main spectral line of mercury light using plane transmission grating and spectrometer.

• To determine the Refracting Angle of prism using spectrometer.

• To determine the Refractive Index and Dispersive Power of prism using spectrometer.

• To determine the Refractive Index of transparent liquid like water using a hollow prism and spectrometer.

• To draw agraphbetween the Angleof Minimum Deviation and wavelength, for different colours of light using spectrometer.

• To plot a graph between Angle of Incidence and corresponding Angle of Deviation using prism and spectrometer.

• To draw a graph between the Refractive Index μ and Wavelength for different colour of light and to verify Cauchy's formula.