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A multimode, step-profile fibre has a core radius of 50 microns, a core index of 1.52 and a cladding index of 1.50.
(a) If the fibre end-face is excited by a source with a wavelength of 850nm, what is the maximum number of bound modes that can be excited?
(b) What is the minimum number of bound modes that will be excited regardless of the wavelength of the source?
(c) If the fibre in (a) is now illuminated simultaneously by 2 sources that emit light at wavelengths of 1,300 and 1,550nm, respectively, what is the total number of different modal states that can be excited?
Draw the graph showing the variation of binding energy per nucleon with mass number. Give the reason for the decline of binding energy per nucleon for nuclei with high mass numbers
An electron is unrestricted from rest at a point in an evacuated region of space at which the electric potential is 5.0 volts. No force except the force of the electric field chara
#quest. While music is on you will try to oppose the two ear phone pieces to attract.
Resonance: When the frequency of driving force becomes equivalent to the natural frequency of an oscillating system, the driving force gives maximum energy and the oscillating
What do you mean by dispersion of light? Write down the expression for the deviation produced by a thin prism?
A 150-kg roller-coaster car climbs to the top of a 91-m-high hill. How much work is completed against gravity as the car is lifted to the top of the hill?
Two friends are at the local high school track, a circle measuring 440 yards for one complete lap. Abe can jog at 8.2 miles per hour while Bob’s jogging speed is 4.6 miles per hour
#question. all question.
Q. Using a figure, show how devaluation affects an economy. Answer: While a currency is devalued from E 0 to E 1 the stability shifts from point 1 to 2. Both money supply and
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