(vii) Light of the correct wavelength to produce optical excitation is incident on a piece a p-type Si. This will produce: (1)

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A: Given:a circuit,when , the diode is off. when , the diode is on. Find:iD1, iD2, iD3 and v0.

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A:

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A: In this question,  Find the  average output voltage Vo    This is half wave rectifier.

Q: What happens to cut-in voltage when the temperature increases? a) Cut-in voltage increases b) Cut-in…

A: Option :b ( correct answer)

Q: Breif the difference in the active and passive element.

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A: The above question is based on BJT circuit analysis.

Photoelectric

The photoelectric effect occurs when light (or similar incident radiation, including X-rays) falls on material together with a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories (and to a Nobel Prize for Albert Einstein). Photoelectric cells, or photocells, are utilized in burglar-alarm light detectors and garage-door openers (each employs a through-beam of light this is broken when something movements throughout it), and also to play soundtracks on film movies (in which a light beam shines through the soundtrack encoded at the film and is "read" with the aid of the photocells).