why is there no Dispersion of white light in the rectangular slab
nnagababu726pb8ss4:
because there is no TOTAL INTERNAL REFLECTION (T.I.R)
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The rectangular slab doesn't act as prism or water molecules which disperses light due to it's higher refractive index
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CONSIDER A GLASS SLAB AS TWO TRIALNGLES
THE TWO TRIANGLES MAKE TWO RIGHT ANGLE PRISM
HENCE NEWTON S LAW OF DISPERSION OF LIGHT IN TWO PRISMS THE SCATTERING OF LIGHT BY PRISM IS REVERSED OR NULLIFIED BY THE SECOND PRISM
HENCE NO SPLITTING OF LIGHT TAKES PLACE.
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