Explain what is a positron?
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How can the presence of an element in a distant star detected ?
What is the velocity of sound air?
What is thermistor used for?
Explain what instrument is used to measure volume?
the fundamental forces of nature are most correctly given as?
What is physical significance of wave function? : quantum physics
egg or hen which came first
Explain when is fluorescence strong?
Explain about Ultraviolet rays?
What is the melting point of copper?
What are the essential characteristics of a wave?
Explain application of optical fibers and sensors?