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Magnetism: 1. There are two types of magnetic pole north and south. 2. Like poles repel and unlike pole attract each other. 3. Magnetic substance produce magnetic field.
if you drop a ball from a tall building, after 4.2 seconds what is its speed in m/s?
Define the interplanar spacing in miller indices. Interplanar spacing d in a cubic lattice Interplanar spacing into a cubic crystal is specified by d = a/(√(h2 + k2 + l
compare the contributions of faraday and oersted to electromagnetic theory
A plane monochromatic wave travelling in a homogeneous medium goes into a denser medium. What are the changes in (i) Frequency (ii) amplitude (iii) speed of propagation & (iv) Phas
show that in a glass prism that the refractive index n = sin1/2(A+Dmin)/sin1/2A where a = refracting angle. hence if the angle of incidence i on oan air boundary is 60degrees. calc
Describe the internals of a light-emitting diode (LEO). Describe what happens internally when sufficient current is applied to activate LED. What isthe device pictured? Wh
differentiate between direct and indirect band gaps
Light is shined into a glass rod. To guarantee the total internal reflection (TIR) happens to all the possible rays, what is the minimum index of refraction n for the glass?
Determine the zero-point energy of a harmonic oscillator havingof a particle of mass 2.33 x 10 -26 kg and force constant 155 N m -1 .
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