Show the biasing of a photodiode with the help of a circuit diagram. Draw graphs to show variation in reverse bias current for different illumination intensities.

Explain (i) forward biasing (ii) reverse biasing of a P-N junction diode. With the help of a circuit diagram, explain the use of this device as a half wave rectifier.

Why is a photodide operated in reverse bias mode? Fig. shown reverse bias current, under different illuminating intensities I_(1)I_(2),I_(3) and I_(4) for a given photodiode. Average the intensities I_(1), I_(2),I_(3) and I_(4) in decreasing order of wavelength.

Is the graph showing variation of current versus voltage for a diode linear or non-linear?

Plot a graph showing variation of current versus voltage for the material Ga.

Draw the circuit diagram of an illuminated photodiode in reverse bias? How is photodiode used to measure light intensity?

With the help of a neat circuit diagram, explain the working of a photodiode. State its any'two uses.

Draw a graph showing the variation of decay rate with number of active nuclei.