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Observation of refraction and lateral deviation of a beam of light incident obliquely on a glass slab |
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Answer» f all you will fix a white paper sheet on a drawing board. Then you will take a glass slab put it symmetrically in the middle of the paper and mark its boundary ABCDNormal point will be drawn at point Q on face AB and draw a LINE PQ making an ANGLE i with the normal.Now you will fix two pins at points 1 and 2 on the line PQ at distances 1 cm Now you will remove the glass slabDraw straight line RS through points 3 and 4 to represent emergent ray. Join QR to represent refracted ray.Now draw normal at point R on face DC and measure angle eDraw TU perpendicular to RS. TU measures lateral displacement dTake another SET for different angle of incident and measure the lateral displacementThese are the final CONCLUSION for the experiment.Angle of incidence (i) = Angle of emergence (e).The lateral displacement INCREASES with the increase in the thickness of the slab.The lateral displacement increases with the angle of incidence (i). |
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