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Luminous flux and LASER:
The luminous flux of a light source is measured in the units of LUMEN (lm). Lumen (lm) is the amount of light emitted per second by uniform (point) source of one candela with in a cone of unit solid angle.
A source having an illuminating power of 1 candela is said to be 1 candle power. A light source is said to be of unit illuminating power or unit luminous intensity if it radiates a flux of 1 lumen through a unit solid angle.
ICBM : Inter Continental Ballistic Missile.
LASER : Light Amplification by Stimulated Emission of Radiation.
Self Gravitational Potential Energy of matter forming a thin uniform shell of mass M and radius R is-
Core losses or Iron losses: These losses having of hysteresis and eddy current losses, which happen due to pulsation of flux in the core. These losses depend upon the maximum flux
Is it possible to construct a vibration magnetometer at home?? If yes then what all materials will i require ? Also what is the working principle of the vibration magnetometer?
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define moment of inertia and it''s physical significance
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In steady state forced vibration, briefly explain how the phase of driven system modifies with frequency of the driving force?
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