answer 23-25 23, The gravitational lensing of a distant quasar is preduced by fo
ID: 291014 • Letter: A
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answer 23-25
23, The gravitational lensing of a distant quasar is preduced by foregronnd galaxy c) the stars d) the gas the supermassive black hole b) all the normal and dark matter large redsbifts 24. a) They are generally very distant b) They were more common early in time c) Galaxy collisions might turn them on What can you conclude from the fact that quasars usually have ver d) Nearby galaxies might hold dead quasars OAll of the above Quasars are among the brightest objects in the universe. b) FALSE TRUE 6. The huge energy output of Activs ntral region. upernovaExplanation / Answer
23) All the normal and dark matter
gravitational lensing is a prediction of Einsteins general theory of relativity, and the deflection is maximum at its centre and reduces as it go furthest from the center.the presence of dark matter can be detect indirectly through this gravitational lensing. the light from the quasars, which are billions of light years distant undergo lensing due to the presence of foreground galaxies and produce multiple images of the quasars.
25)True
Black holes has a strong gravitational field, sometimes the star near the black hole pull towards it and the gas and debris of the star start to spiral aroud the black hole, energy release in the form of electomagnetic waves including radio, visible, infrared, ultraviolet and X ray and this acretion disc of gas and particle generate so much of energy and that makes it brightest objects in the universe.
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