Huygens Principle

By Corpuscular theory of light , the phenomenon which can be explained is

• Polarisation

•   Interference

•   Diffraction

• Refraction       

   Huygens' principle is used to

• Obtain the new position of wavefront

• Explain the principle of superposition of waves

•   Explain interference

•   Explain polarization                        

   The wave theory of light was given by

• Maxwell                    

• Planck    

• Huygen      

• Young

According to Huygen’s theory, light is a form of

• particle                     

• Rays   

• Wave

• Corpuscles

A plane wavefront is formed

• from a diverging spherical source of light      

• from a converging spherical source of light

• from any spherical source of light with small value of radius

• with large enough radius tending to infinity of a spherical wavefront

   The phase difference between any two points on a wavefront is

• zero                      

• π^c/4                       

• π^c/2                             

• π^c           

The shape of the wavefront  originating from a point source at finite distance is

• Spherical      

• Cylindrical       

• Plane     

• Hyperbolic

Huygen’s concept of secondary waves is useful in

• explaining polarisation      

• determining focal length of the lens     

• construction of -rays

• geometrical construction of a wavefront.

  Ray diverging from a linear source in isotropic medium forms wavefront which is

• cylindrical          

• spherical    

• plane

• hexagonal

Huygen’s principle of secondary wavelets may be used to

• find the velocity of light in vacuum              

• explain the particle behaviour of light

• find the new position of a wave front

• none of these