In a solar cell the light initially passes through the n-type silicon to reach the pn-junction where it is desired that the light absorption occur. If we want at least 90 percent of the light entering a silicon solar cell to reach the pn-junction region, what is the maximum thickness of the n-type material for 0.6 ?m light assuming pure silicon?
What will be an ideal response?
Physics & Space Science
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State Kepler's three laws of planetary motion
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Physics & Space Science
What energy is needed (in MeV) so two deuterium atoms moving together will reach the necessary 10?14 m for fusion?
a. 0.511 b. 0.14 c. 2.5 d. 4.3 e. 1.0
Physics & Space Science
A circular loop of wire of cross-sectional area 0.12 m2 consists of 200. turns, each carrying 0.50 A. It is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What torque acts on the loop?
What will be an ideal response?
Physics & Space Science
A layer of water (n = 1.333) floats on carbon tetrachloride (n = 1.461) contained in an aquarium. To the nearest degree, what is the critical angle at the interface between the two liquids?
a. 88° b. 78° c. 66° d. 58° e. 43°
Physics & Space Science