Experiment(s):
1. Determination of wavelength of sodium lamp
2. Determination of focal length of convex lens
3. Determination of refractive index of water/liquids
Specifications:
a) Microscope
Newton’s rings microscope
Reflector: 45° turning glass plate
Metal assembly with knob screw
Fixed glass plates and lens assembly
Base material: Cast iron
Moving components: Brass
Reading: Screw gauge type
reading micrometer
x-movement: 50 mm
Resolution: 0.01 mm
b) Sodium vapour lamp set
(Optional)
Lamp: Philips / Thorne 35 W
Lamp house: Single lamp type
with fixed slit openings
Transformer: 35 W, Instant ON type
Rated Input: 220 V/50 Hz
or 110 V/60 Hz