write first four terms of an A.P.when. (b). a=1. d=1/2
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Experiments with beams of negative particles were performed in Britain by Joseph John ("J.J.") Thomson, and led to his conclusion in 1897 that they consisted of lightweight particles with a negative electric charge, nowadays known as electrons. Thomson was awarded the 1906 Nobel Prize.
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Answer:
1, 3/2, 4, 5/2
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