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Production of audio and video signals
Iconoscope is a type of camera consisting of a cathode ray beam and a photoelectric cell. The picture is scanned with the help of iconoscope. The degree of variations in the light intensity on different portions of the image is detected by photocells. These photocells convert the light signals into different electrical currents of corresponding intensity. These electrical signals are amplified and used for modulation. At the same time, sound waves are also converted into electrical signals, amplified and used for modulation.
Determine the real position of an air bubble in a glass cube of side 0.3m if the bubble seems to be at a distance of 0.05 m from one face and at 0.15m from the opposite face.
Harmful effects of Noise: 1. Noise causes nervous tension, aggression and commotion in normal human beings. 2. Continuous noise damage hearing power and complete deafness.
Calculate the top heat-loss coefficient for a solar collector with a single glass cover having the following specifications (neglect edge effects), also calculate the ambient air t
What are Newton s laws of motion? 1. A body at rest will stay at rest and one in motion will stay in motion, unless and unless acted upon by an external force. (Law of inertia)
Distinguish between negative and positive crystal?
A particle of mass , initially moving with a speed v, collides head on ELASTICALLY with an identical particle initially at rest. a. Do you expect the total mass of the particles
A locus formed by joining the points which are at the equal distance from the source....is called wavefront...
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the theory for this motion
What are isobars and isotopes What will be the ratio of the radii of two nuclei of mass numbers A 1 and A 2
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