State; (a) the difference between plane polarized light and ordinary light; (b) two uses of...
PHYSICS
WAEC 2007
State;
(a) the difference between plane polarized light and ordinary light;
(b) two uses of polaroids
Explanation
(a) In plane polarized light the vibration of the particles are confirmed to a single plane while in ordinary light, the particles vibrate in all planes perpendicular to the direction of propagation of the wave.
(b) Uses of polaroids are:
— stress analysis
— measurement of concentration of sugar solution
— used to eliminate sun glare
— used in sun glasses to reduce the intensity of sunlight
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