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Q. What are the characteristics of laser beam?
Characteristics of laser
The laser beam (a) is monochromatic. (b) is coherent with the waves all exactly in phase with one another (c) does not diverge at all and (d) is extremely intense
Define the function of photodetectors in fibre optic communication system. Photo-detectors: At the receiver end, conversion of optical signal into analog signal is being don
Production of electricity by light: The Photovoltaic Cell or Solar Cell. A photovoltaic cell generates an emf when light falls onto it. Several forms of photovoltaic cell exi
Explain the Resonance of Sound in Air Columns Wind instruments use vibrations in air columns to generate notes. The end that air is blown into is all time considered an open en
The wave nature of light is demonstrated by which of the following a) The photoelectric effect b) Colour c) The speed of light d) Diffraction Ans: The w
what is the difference between a supplementary unit and fundamental unit
what is entropy and how is it useful in our everyday life?
What are the properties of ultrasonic waves? Properties of Ultrasonic Waves are as follows: a. Ultrasonic waves are acquiring frequencies higher than20 KHz and therefore th
Explain about the laser cutting and welding. Laser cutting and Welding: Laser cutting is a technology which uses a laser to cut materials, and is generally used for industri
i have to make an assignment on this topic plz suggest me how can i make this?
What is a capacitor ? A capacitor is basically a two conductors conencted with an insulator.... It stores great amount of charge!
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