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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.
What are mass defect and binding energy? How is mass defect related to binding energy? Describe the term ‘decay constant' for a radioactive substance. Reduce the relation betwee
A transformer is a static device which transfers AC electrical power from one circuit to another at the same frequency but the voltage level is changed usually. When the voltage is
Very thin glass sheets are used to form these capacitors. The sheets are interleaved with aluminium foil and fused together to forms a solid block. These capacitors are smaller in
Write down Gauss law in electrostatics. get its differential form in vacuum.
composition of simple harmonic motion
How can I find current by Nodal analysis
Are fibers optics systems expensive? To find out whether a system is expensive one would have to establish a comparison with an option, which in most cases doesn't exist. To co
The most probable radius (in pm) for finding the electron He + is: (1) 0.0 (2) 52.9 (3) 26.5 (4) 105.8 Ans: (c)26.5
Q. What is fine structure of spectral lines? When the spectral line of hydrogen atom is observed by spectrometers having high resolving power it is found that a single line is
Water at 10 Celsius flows at uniform velocity of 0.1 m/sec into a parallel plate channel, which is wide in the third direction. The parallel plates are at 20 Celsius and are 1.0 cm
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