Higher Physics Lab Light & Optics

TWO BEAM INTERFERENCE SK005/SN629

 

Exp-1 To determine the wavelength of monochromatic light source using Fresnel’s biprism.
Exp-2 To determine the wavelength of monochromatic light source using Fresnel’s mirror.

  • All uprights are Mounted on specially designed hexagonal optical bench with locking arrangements for precise positioning.
  • Additional support at center of the optical bench minimizes the possibility of sagging.
  • Interference.
  • Fresnel biprism.
  • Fresnel mirror.
  • Wave length.
  • Virtual light source.
Two Beam Interference Two Beam Interference

Principle and Working :

Fresnel's Biprism and Fresnel's Mirror can be used to create two Virtual coherent light sources and observe interference phenomenon. Monochromatic light in these experiments is produced by sodium light source or He-Ne laser. The wavelength (λ) can be determined by the formula

λ = βd/D

where, β is the fringe width,
D is the distance between virtual source and screen or eyepiece, and
d is the distance between two virtual sources.

Contents:

Cat No. Item Name SK005 SN629
SL435 Fresnel biprism 1 1
SL885 Universal lens holder (Biprism) 1 1
SL214 Optical bench hexagonal 1 1
SL802 Adjustable slit self centering 1  
SL930 Sodium light source 1  
SL233 Micrometer eyepiece 1  
SL756 Convex lens in holder 1 1
SL436 Transverse saddle 1 2
CD533 Fresnel mirror 1 1
CD556 Microscope objective in holder   1
SO016 Translucent screen   1
SG110 Cylindrical base   1
SP142 Vernier caliper   1
SP124 Measuring tape   1
R3891 He-Ne laser 2mW   1
SL216 Saddle 3 3

Light & Optics Experiments

 


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