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Q. A managing wire of length 2m has a diameter of 0.4 mm with a resistance of 70 ohm. Find its resistivity.
ρ = ( P X πr2) / L = ( 70 X 22 X 2 X 10-4 X 2 X 10-4) / 7 X 2
= 44 X 10-7 = 4.4 X 10-6 Ωm = 4.4 μ Ωm
Q. The Rydberg's constant for hydrogen is 1.097 X 10 7 ms -1 . Calculate the shortest wavelength limit of Lyman series. Data : R = 1.097 × 10 7 m -1 For small wavelen
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A cyclist rides at a constant speed of 12.0 m/s for 1.20 min and then coasts to a stop with uniform acceleration 21.2 s later. If the total distance travelled is 1321 m, then w
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