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Olbers' paradox (H. Olbers; 1826):
If the Universe is uniform, infinite & unchanging then the whole sky at night would be bright regarding as bright as the Sun. The further you looked out to space, the more stars there would be, and therefore in any direction wherein you looked your line-of-sight would impinge upon a star eventually. The paradox is resolved through the big bang theory, which puts forth that the Universe is dynamic, non-uniform and (probably) finite.
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Truck has a 100 kW engine power and 40 % efficiency . As oil burn in an hour if q = 4.4 to force multiplication 10 to 7 ?
describe the construction and working of a Nicol prism.discuss how you obtain a plane polarised beam with it?
how proton electron hypothesis is rejectrd on the basis of nuclear magnetic dipole moment?
what is zener diode?
on air pollution
describe the construction and working of michelson''s interferometer explain the formation of circular fringes how will you use these fringis in the determination of difference in
A monochromatic beam of unpolarised light is incident on a glass slab. The reflected ray is found to be purely plane polarized. Evaluate the angle between the reflected and the ref
a catapult can hurl a rock straight up in the air 45 m high. What is the maximun range of the catapult?
Explain about the term pumping in laser. Pumping in laser is particular criteria to get laser output. It is same to pumping well water to the ground level or to an overhead tan
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