Experiment(s):
1. Determination of slit width.
2. Determination of wavelength of Laser using mm scale as grating.
3. Determination of wavelength of Laser using diffraction grating.
Specifications:
a) Optical bench
Length: 1 m
Fixture: Three (for Laser source,
grating/scale & screen)
Material: Aluminium & cast iron
b) Semi-conductor diode Laser
Wavelength: 625 nm (Red)
Power: External power supply,
mains operated (Included)
Base: Adjustable height
Power: 2 mW
c) Adjustable slit
Maximum slit width: 5 mm
Minimum slit width: 0.1 mm
Slit length: 15mm
d) mm graduation scale
mm graduation on acrylic scale
magnetically placed on base
e) 3 in 1 Grating
3 gratings of grating constant
100 LPI, 300 LPI & 600 LPI
