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1. Describe in detail and with the aid of diagrams the Photoelectric Effect experiment. (500 words) 2. Describe the Davisson and Germer Electron Scattering Experiment. (500 words) 3. Describe the excitation of electrons in an intrinsic semiconductor and derive an equation for the conductivity of the material. (500 words) 4. Explain what is meant by the following terms in the context of semiconducting materials: (i) p-type, (ii) n-type, (iii) majority carrier, (iv) minority. (500 words) 5. Explain with the aid of energy band diagrams the flow of current through a p-n junction under (i) zero bias, (ii) reverse bias and (iii) forward bias conditions. (500 words)
a string 60 cm longfastened at each end. when driven by an oscillator at frequency of120 Hz L=.60m. ym=.02m. f=120Hz. wavelength=.30, ind wavelength in air of soundwave produced by vibratingstring
Two containers contain the same gas at different temperatures and pressures, as indicated in the figure. The small container has a volume of 2 L, and the large container has a volume of 4 L.
A 45.0-cm-diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. What is the magnitude of the electric field
From colonial times through the 1960s, the primary mode of mental illness treatment was institutional. What factors were responsible for this shift
A 100W yellow lightulb(550nm) is 100m away from a 3cm diametershuttered aperture. What is the total irradiance
The speed of an alpha particle is determined to be 2.55e6 m/s. If all of its kinetic energy is acquired by passing through an electric potential, compute what the magnitude of that potential
A photon of wavelength 0.87671 nm strikes a free electron that is initially at rest. What is the speed of the recoil electron after the collision
A charge of 6.53mC is placed at each corner of a square .470 m on a side. Determine the magnitude of the force on each charge. Determine the direction of the force on each charge.
consider two widely separated conducting spheres 1 and 2 the second having five times the diameter of the first. the
An object is located 12.5 centimeter in front of a convex mirror, the image being 6.50 centimeter behind the mirror. Evaluate how far in front of mirror is second object located
Your spaceship lands on an unknown planet. To determine the characteristics of this planet, you drop a 1.30 kg wrench from 3.50 m above the ground, What is the mass of the planet
Assume all temperatures to be exact. Ice (initially at 0 ) is added to 0.50L of tea at 18C to make the coldest possible iced tea. If enough ice is added so the final mixture is all liquid, how much liquid is in the pitcher when this condition occurs?
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