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lumen; lm:
The derived SI unit of luminous flux, described as the luminous flux emitted through a uniform point source of 1 cd emitting its luminous energy on a solid angle of 1 sr; thus it has units of cd sr.
Q. What is dielectric polarization? The arrangement of the dipole moments of the permanent or induced dipoles in the direction of applied electric field is called polarisation
Why does it take longer to heat a bucket of water than a cup of water? Because there is extra water in a bucket than in a cup, and more energy has to be put into the bucket of
SMALL ALKALINE CELLS: Hermetically sealed Ni-Cad cells are produced in the same size and shape as their primary counterparts. They are small, portable and maintenance free, but
Surface crystallography and epitaxy. Fe thin films are grown on a single-crystal Al(100) substrate surface. The films grow with no dislocations (if they are thin enough) with sug
one of scrooges relatives visited him in the counting house. who was it and what did he want ........................... i couldnt found a subject with reading
What two properties of electromagnetic waves are used to attach info to radio signals? a) By varying the amplitude of a radio wave, you can determine information. That is how A
The phase of weightlessness may be observed in the following situations: (i) When objects fall freely under gravity : For example, a lift goes down freely, or an airship showing
Q. Illustrate what is a thermal transformation? Answer:- Chemical or else physical changes are not requiring a change in the temperature of the substance as in the formati
give a example
give applications of resonance
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