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Q. What is Maser? Give the principle of it.
1) The term MASER for Microwave Amplification through Stimulated Emission of Radiation.
2) The working of maser is similar to that of laser.
3) The maser action is basis on the principle of population inversion followed by stimulated emission.
4) The released photon belongs to the microwave frequencies.
Briefly explain the conditions for clear vision of interference fringes.
describe concave grating and rowland mountng
Places where friction occurs Locate the places on several mechanical devices where parts rub together. Roller skates, pulleys and the wheels of toys often required oil. Try to
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Q Define threshold frequency? The minimum frequency of incident radiation lower which the photoelectric emission isn't possible completely but high the intensity of incident r
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An engineer is using DSC to determine the fiber volume fraction of a carbon fiber / epoxy prepreg. It is known that the heat of reaction of the pure, fresh epoxy resin (no carbon
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