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Define the term multi-mode fibre shortly.
Multi-mode fibre:
This type of fibre permits more than one mode to travel by this. As this has to permit more number of modes to travel which, the fibre has to have a larger core. A classical multimode fibre has a core diameter in order of from 150 to 200µ m. That a large core permits more number of modes to travel but also makes this easier to launch the light in fibre and to join two fibres together. Conversely, larger the number of modes, larger will be the dispersion of light into the fibre.
1.A=the set of whole numbers less tan 4 ? 2.B=the set of prime numbers less than 19 ? 3.C=the set of first three days of week?
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Write short notes on the working of a thermopile. Illustrate working and construction of Dud dell's thermo galvanometer.
Types of Semiconductor Diode
ohmmeters: The use of ohmmeters is somewhat more involved. Most importantly when measuring resistance the circuit power must be switched off, power is derived from within the i
who made einstein''s theory wrong and how?
Explain electric lawn-mower A television set having a power rating of 120W and electric lawn-mower of power rating 1 kW are both linked to a 240V supply. If 3A, 5A and 10A
Earth and Moon two are act as a two magnets. and when they rotating the flux changes . then the current produces or not . if not what is the reason? Ans) E.M.F is induced only whe
describe concave grating and rowland mountng
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