Who is the author of Distant Neighbours? ?->(Show Answer!)

1. Who is the author of Distant Neighbours?

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MCQ-> In the modern scientific story, light was created not once but twice. The first time was in the Big Bang, when the universe began its existence as a glowing, expanding, fireball, which cooled off into darkness after a few million years. The second time was hundreds of millions of years later, when the cold material condensed into dense suggests under the influence of gravity, and ignited to become the first stars.Sir Martin Rees, Britain’s astronomer royal, named the long interval between these two enlightements the cosmic ‘Dark Age’. The name describes not only the poorly lit conditions, but also the ignorance of astronomers about that period. Nobody knows exactly when the first stars formed, or how they organized themselves into galaxies — or even whether stars were the first luminous objects. They may have been preceded by quasars, which are mysterious, bright spots found at the centres of some galaxies.Now two independent groups of astronomers, one led by Robert Becker of the University of California, Davis, and the other by George Djorgovski of the Caltech, claim to have peered far enough into space with their telescopes (and therefore backwards enough in time) to observe the closing days of the Dark age.The main problem that plagued previous efforts to study the Dark Age was not the lack of suitable telescopes, but rather the lack of suitable things at which to point them. Because these events took place over 13 billion years ago, if astronomers are to have any hope of unravelling them they must study objects that are at least 13 billion light years away. The best prospects are quasars, because they are so bright and compact that they can be seen across vast stretches of space. The energy source that powers a quasar is unknown, although it is suspected to be the intense gravity of a giant black hole. However, at the distances required for the study of Dark Age, even quasars are extremely rare and faint.Recently some members of Dr Becker’s team announced their discovery of the four most distant quasars known. All the new quasars are terribly faint, a challenge that both teams overcame by peering at them through one of the twin Keck telescopes in Hawaii. These are the world’s largest, and can therefore collect the most light. The new work by Dr Becker’s team analysed the light from all four quasars. Three of them appeared to be similar to ordinary, less distant quasars. However, the fourth and most distant, unlike any other quasar ever seen, showed unmistakable signs of being shrouded in a fog because new-born stars and quasars emit mainly ultraviolet light, and hydrogen gas is opaque to ultraviolet. Seeing this fog had been the goal of would-be Dark Age astronomers since 1965, when James Gunn and Bruce Peterson spelled out the technique for using quasars as backlighting beacons to observe the fog’s ultraviolet shadow.The fog prolonged the period of darkness until the heat from the first stars and quasars had the chance to ionise the hydrogen (breaking it into its constituent parts, protons and electrons). Ionised hydrogen is transparent to ultraviolet radiation, so at that moment the fog lifted and the universe became the well-lit place it is today. For this reason, the end of the Dark Age is called the ‘Epoch of Re-ionisation’. Because the ultraviolet shadow is visible only in the most distant of the four quasars, Dr Becker’s team concluded that the fog had dissipated completely by the time the universe was about 900 million years old, and oneseventh of its current size.In the passage, the Dark Age refers to
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MCQ-> Study the information carefully and answer the questions.I, J, K, L, M, N, 0 and P are sitting around a circular area at equal distance between each other but not necessarily in the same order. Some people face the centre while some face the outside (i.e. in a direction opposite to the centre.)J sits third to the right of M. M faces outside. Only one person sits between j and N. Both the immediate neighbours of N face outside. Only three people sit between 0 and P. 0 is not an immediate neighbour of J. Both the immediate neighbours of L face the centre. L is not an immediate neighbour of 0. Both the immediate neighbours of K face the centre. Both the immediate neighbours of M face a direction opposite to that of 0 (i.e. if 0 faces the centre then both the immediate neighbours of M face outside and viceversa.)Which of the following is true regarding I as per the given arrangement ?
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MCQ-> Study the following information carefully and answer the questions given below :Eight persons — A, B, C, D, P, Q, R and S — are sitting around a circular table with equal distances between each other (but not necessarily in the same order). Some of them face outside and some others face the centre. NOTE : Facing the same direction means if one faces the centre then the other also faces the centre and viceversa. Facing the opposite directions means if one faces the centre then the other faces outside and viceversa. Immediate neighbours face the same direction means if one neighbour faces the centre then the other neighbour also faces the centre and viceversa. Immediate neighbours face the opposite directions means if one neighbour faces the centre then the other neighbour faces outside and viceversa. P sits to the immediate right of C. Only three persons sit between P and A. R sits third to the left of A. Neither A nor C is an immediate neighbour of B. D sits to the immediate left of B. Q sits second to the left of D. The immediate neighbours of A face the same direction. The immediate neighbours of B face opposite directions. S sits second to the right of P. The immediate neighbours of C face the same direction. S faces outsideFour of the following five are alike in a certain way based on the given sitting arrangement and so form a group. Which is the one that does not belong to that group?
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MCQ-> Study the following information carefully and answer the questions given below. Eight persons — H, I, J, K, L, M, N and O — are standing in a straight line at equidistant. Some of them are facing north while others are facing south. M is standing third to the right to H. M is standing at one of the extreme ends. L is standing third to the left of H. The immediate neighbours of J. face north. N is not an immediate neighbour of H.The persons standing at the extreme ends face the same direction (both are facing either north or south). The immediate neighbours of H face, just opposite direction as that of M. The immediate neighbours of 0 face opposite direction with respect to each other.K is one of the immediate neighbours of L and is facing north. I is standing between J and M. Notmore than four persons are facing north.L is immediate right of K.Who among the following is third to the left of N ?
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MCQ-> Study the following information carefully and answer the questions given below:Eight friends P, Q, R, S, W, X, Y and Z are sitting around a circular table but not necessarily in the same order. Some of them are facing the centre and some others are facing outside (i.e. in a direction opposite to the centre.) Note :(i) Facing the same direction means if one person faces the centre then the other also faces the centre and vice-versa. (ii) Facing the opposite directions means if one person faces the centre then the other faces outside and vice-versa. (iii) Immediate neighbours facing the same direction means if one person faces the centre then the other also faces the centre and vice-versa. (iv) Immediate neighbours facing the opposite directions means if one person faces the centre then the other faces outside and vice-versa. • R sits second to the right of Y. Only two persons sit between R and W. • P sits to the immediate right of W. W faces outside. • Only one person sits between P and Z. Immediate neighbours of P face opposite directions. • Q sits third to the left of Z. Q is not an immediate neighbour of P. • X faces a direction opposite to that of Y. X is an immediate neighbour of neither Y nor P. • Immediate neighbours of S face same direction. P does not face outside. • R and Q face a direction opposite to that of S.Four of the following five are alike in a certain way based on the direction they are facing and so form a group. Which is the one that does not belong to that group?
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