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Q. Illustrate about Optical Memories?
In 1983 one of the most successful consumer products of all times was introduced which is compact disk (CD) digital audio system. This CD was a non-erasable disk which could store more than 60 minutes of audio information on one side. Huge commercial success of this CD enabled development of low-cost optical-disk storage technology that has revolutionised computer data storage. Some optical-disk systems has been introduced. We briefly review each one of these.
Finding the centre of gravity of objects Secure a triangular file and place it on a table as a balancing point. Any sharp-edged device with a hat side might be used. Balance se
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
Suppose a baseball rolls 3.2 m across the floor. If the ball's angular displacement is 82 rad, what is the circumference of the ball?
Magnifying Glass: A biconvex lens of short focal length and low power which forms a virtual and magnified image of an object placed with its focal length is known as magnifying
A galvanometer together with an unknown resistance in series is linked across two identical batteries each of 1.5V. whenthese batteries are connected in series the galvanometer rec
how can we find the value of g
Sample Problem: Consider laminar flow through two infinitely wide parallel plates spaced D apart from one another. What is the thermal entry length?
what is the motion of an oscillating column in a u-tube?
The average speed of a substance in a given interval of time is described as the ratio of the distance completed to the time taken while; average velocity is described as the ratio
Radio Waves: Radio waves are electromagnetic waves with large range of wavelength from a few millimetres to many meters.
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