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What makes a good illuminator?
Illuminators should perform three separate tasks along with a degree of efficiency. Initially must house a lamp and its transformer, power source, ballast, wiring and igniter in a correct and safe way. Secondly, this must focus on the light of the lamp into the most efficient way to make sure an adequate performance. Thirdly, this should create an appropriate environment to guarantee the long life of the common end, it being the union with the fiber optics. Along with this last task in mind, an illuminator should be designed to minimize the thermal load upon the screen by all possible means, forced ventilation, filters, deflectors and air ducting.
Define the physical significance of damping coefficient and how can we caluclate it? What is its unit
A jogger runs at a constant rate of 10.0 m every 2.0 s. The jogger starts at the origin, and runs in the positive direction for 3600.0 s.The figure below is a position-time graph s
Two tiny objects with equal charges of 71.0 µC are placed at two corners of a square with sides of 0.340 m, as shown. How far above and to the left of the corner of the square labe
A skydiver falls d1 = 495 meters in t1 = 22 s before opening his parachute. After the chute opens, he falls an additional d2 = 470 meters in t2 = 56.5 s. (a) Write an expression t
A 250 N crate is sitting on a 30 degree inclined plane. The frictional force is larger than the component of the crate's weight parallel to the inclined plane, so that the crate do
What are the characteristics of dead stars? Dead stars are generally cold balls of material in empty space. A teaspoonful of white dwarf matter would weigh as more as an Ele
Define Poisson Distribution in Ideal Gas? Consider a monatomic ideal gas of total Ñ molecules in a volume V ˜ Show that the probability, P N for the number N of mole
Which of the following has the same mass as that of an electron: (1) Photon (2) Neutron (3) Positron (4) Proton Ans: Positron
(i) Effect of temperature: (a) In general elasticity reduces as the temperature increases. (b) Invar is an exception. There is no effect of temperature on elasticity of in
Explain the Transmission of Heat Transmission of heat (movement of heat from the hotter item to the colder item) can be brought about three ways: by conduction, convection, and
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