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Explain the Photosensitive Detectors?
A wide range of detectors varying in senstivity and cost are available. They contain a light sensitive surface that releases electrons in number proportional to the intensity of light on it, converting light energy into electrical energy. The current thus generated is a direct function of the light intensity. Different detectors used are:
a) Barrier layer cells
b) Photoemissive tubes
c) Photomultiplier tubes
d) Photoconductive cells
What is the evolutionary importance of the emergence of seeds in the plant kingdom? The evolutionary significance of the seed is related to the plant capability of distant colo
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