PRISM AND DISPERSION OF LIGHT

Dispersion OF Prism

Prism|Minimum Deviation|Refractive Index Of Material Of Prism|Dispersion Of Light|Angular Dispersion|Dispersive Power|OMR

Refraction Of Light Through A Prism|Dispersion Of White Light By A Glass Prism|Formation Of Rainbow|OMR

Dispersion Of Light Through Glass Prism|Spectrum Of White light|Dispersion Of Light |Cause Of Dispersion Of Light|Re-Combination Of Spectrum Colours To Give White Light|Questions|Home Work|Summary

Refraction Of Light Through A Prism|Formation Of Rainbow|Dispersion Of White Light By A Glass Prism|OMR

Refraction Of Light Through A Prism|Formation Of Rainbow|Dispersion Of White Light By A Glass Prism|OMR

Structure Of Human Eye|Defects Of Vision And Their Correction|Refraction Of Light Through A Prism|Dispersion Of White Light By A Glass Prism|Formation Of Rainbow|Twinkling Of Stars|Advance Sunrise And Delayed Sunset|Colour Of The Clear Sky|OMR

When a ray of sun light passes through the prism each colour of light has its own speed in the glass. The seven colours come out of the prism with different angles of deviation. Red deviates least and violet deviates maximum. Thus a prism can disperse a white light into seven colours which is called colour spectrum. For a thin prism the angle of deviation is given as 8 =(n-1) The angle of dispersion is given as 0 = 8 -0. The dispersive power of a prism is 0 mean 8 Using the above ideas give answer the following questions A prism has R.I. for violet and red = 1.523 n = 1.5145. If the angle of prism is A = 2° the dispersive power of the prism is :

When a ray of sun light passes through the prism each colour of light has its own speed in the glass. The seven colours come out of the prism with different angles of deviation. Red deviates least and violet deviates maximum. Thus a prism can disperse a white light into seven colours which is called colour spectrum. For a thin prism the angle of deviation delta =(n-1) A deviation is given. The angle of dispersion is given as theta = delta v - delta r . The dispersive power is omega = theta / delta mean Using the above ideas give answer the following questions A prism has R.I. for violet and red ” =1.523 n =1.5145 If the angle of prism is A= 2° the dispersive power of the prism is : 0.01639 1.593 0.1639 0.18

Defects Of Vision And Their Correction|Structure Of Human Eye|Dispersion Of White Light By A Glass Prism|Refraction Of Light Through A Prism|Twinkling Of Stars|Advance Sunrise And Delayed Sunset|Formation Of Rainbow|Colour Of The Clear Sky|OMR