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Q. Which of the following isn't true of Guglielmo Marconis experiments on wireless transmission
Answer:-
A) In 1901 he broadcasted a signal from Newfoundland to England
B) He defied present belief on line-of-sight transmission
C) His work was a practical request of the work of James Clerk Maxwell
D) His achievement was a vindication of his belief in the reflective properties of the ionosphere
(1) The current in a super conductor once set up continuous for a very long time without attenuations. (2) The permeability of a super conducto
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A plane diffraction grating of width 2.5cm has 1500 rulings. Monochromatic light of wave length 5893A 0 is incident normally on it. Determine the angle at which second order princ
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