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(i) It having of dissimilar bright lines.
(ii) It is given by an excited source in atomic state.
(iii)E.g. Spectrum of excited helium, mercury vapours sodium vapours or atomic hydrogen.
Any thermodynamic procedure which takes place in a system without the exchange of heat with the surroundings.
A bob hanged to astrirg in a box .it is displaced to an agle of 45 .then fid the acceleration of the box at this moment. Ans) gsin45,that is 10/1.4142.as it would have only tangen
Explain Weightlessness When can you feel weightless? There are two basic ways. You can be far enough away from all large objects in the universe that the force of gravity due t
Is CPH a quantum energy unchangeable? Answer- Yes, the quantum energy (photon) is made of lots CPH, different between photons depend to the number of CPH that they are made of.
Explain why easier to pull a lawn roller than to push it? Explaination : In Pulling, effective weight of lawn mover= mg-fsinx In pushing, effective weight = mg+
As defined in physics, work is: a) A scalar quantity b) Always a positive quantity c) A vector quantity d) Always zero Ans: As defined in physics, work
what are the general properties of magnetism
What is force
Q. Jingdan turned a screwdriver into a magnet by rubbing it with a strong bar magnet to pick up a screw that has fallen into an inaccessible spot. How could he demagnetize his
what is friction force? why does opposes the motion?
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