Find the ratio of rates of spontaneous emission and stimulated emission for a tungsten
filament lamp operating at a temperature of 2000K, taking the average frequency to be
5x 1014 Hz?
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Explanation:
Cool and moist growing season.
Bright sunshine at the time of ripening.
Rainfall: 50 to 75 cm evenly distributed over the growing season.
Loamy soil is best for its growth.
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