Why do the light pulses give rise to a band of frequency
When a laser beam reflects from a rotating mirror, it produces pulses of light with a band of frequencies centred on the fundamental optical frequency. Why do the light pulses give rise to a band of frequency?
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A box contains 10 screws, three of which are defective. Two screws are drawn at random. Find the probability that neither of the two screws is defective. Assume we are sampling without replacement.
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