Optics


   
 
Numerical - 25
25. Two coherent sources of intensity ratio 100:1 interfere. Deduce the ratio of intensity between the maxima and minima in the pattern.
 
Suggested solution:
 
 
 
For maximum, amplitude = a1 + a2 = 10a2 + a2 = 11a2
 
For minimum, amplitude = a1 - a2 = 10a2 - a2 = 9a2
 
 
  
     
   
Get unlimited tutoring in Math, English, Physics, Chemistry, Biology, Algebra, Geometry and all other subjects at $99.99 per month!

(100% money-back guarantee*)


Optics

  		•  Reflection of Light
  		• Spherical Mirrors
  		• Sign Conventions and Rules for Drawing Ray Diagrams
  		• Relation between Focal Length and Radius of Curvature in Spherical Mirrors
  		• Mirror Formula
  		• Linear Magnification of Spherical Mirror
  		• Applications of Spherical Mirrors
  		• Refraction of Light
  		• Relation between Relative Refractive Index and Absolute Refractive Index
  		• Total Internal Reflection and its Application
  		• Spherical Refracting Surface
  		• Lenses
  		• Lens Formula
  		• Lens Maker's Formula
  		• Ray diagrams for convex lens showing the formation and nature of image for different positions of the object
  		• Thin Lenses Placed in Contact
  		• Power of a Lens
  		• Prism
  		• Dispersion of Light
  		• Applications of Prism
  		• Spectra
  		• Scattering of Light
  		• Human Eye
  		• Camera
  		• Simple Microscope or Magnifying Lens
  		• Compound Microscope
  		• Astronomical Telescope
  		• Reflecting Telescope
  		• Wave Optics - Introduction
  		• Wavefront
  		• Huygen's Wave Theory
  		• Verification of Laws of Reflection on the basis of Huygen's Wave Theory
  		• Verification of Laws of Refraction based on Huygen's Wave Theory
  		• Superposition of Interference
  		• Interference of Light
  		• Coherent Sources
  		• Young's Double Slit Experiment
  		• Diffraction
  		• Resolving Power
  		• Polarization
  		• Malu's Law
  		• Scattering Due to Polarization
  		• Applications of Polarized Light
  		• Doppler Effect in Light
  		• Summary
  		• Summary(Contd...)
  		• Numerical - 1
  		• Numerical - 2
  		• Numerical - 3
  		• Numerical - 4
  		• Numerical - 5
  		• Numerical - 6
  		• Numerical - 7
  		• Numerical - 8
  		• Numerical - 9
  		• Numerical - 10
  		• Numerical - 11
  		• Numerical - 12
  		• Numerical - 13
  		• Numerical - 14
  		• Numerical - 15
  		• Numerical - 16
  		• Numerical - 17
  		• Numerical - 18
  		• Numerical - 19
  		• Numerical - 20
  		• Numerical - 21
  		• Numerical - 22
  		• Numerical - 23
  		• Numerical - 24
  		• Numerical - 25
  		• Numerical - 26
  		• Numerical - 27
  		• Numerical - 28
  		• Numerical - 29
  		• Numerical - 30
  		• Numerical - 31
  		• Numerical - 32
  		• Numerical - 33
  		• Numerical - 34
    Animations
  		• Reflection of Light
  		• Verification of Laws of Reflection
  		• Spherical Mirrors
  		• Formation of image by a Concave Mirror
  		• Formation of image by a Convex Mirror
  		• Uses of Spherical Mirrors
  		• Image due to Multiple Reflection of Light
  		• Refraction
  		• Verification of Laws of Refraction
  		• An Alternate Method
  		• Real Depth and Apparent Depth
  		• Some Effects of Refraction
  		• Total Internal Reflection
  		• Effects of Total Internal Reflection
  		• Lenses
  		• Image Formation by a Convex Lens
  		• Image Formation by a Concave Lens
  		• What is a Prism?
  		• Dispersion of White Light
  		• Angle of Deviation of a Prism
  		• Colour Phenomena in Nature
  		• External Features of the Human Eye
  		• Simple Microscope
  		• Compound Microscope
  		• Astronomical Telescope
  		• Huygen's Wave Theory
  		• Verification of Snell's Law Using Huygens Principle
  		• Interference
  		• Young's Double Slit Experiment
  		• Diffraction of Light
  		• Polarisation of Light and Polaroids