Sunlight always overcomes the lights of the stars. The fading away of stars in the presence of the sun is known as

1. Sunlight always overcomes the lights of the stars. The fading away of stars in the presence of the sun is known as -

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MCQ->Sunlight always overcomes the lights of the stars. The fading away of stars in the presence of the sun is known as -....

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-> A country has the following types of traffic signals.3 red lights = stop2 red lights = turn left1 red light = turn right3 green lights = go at 100 km/hr speed2 green lights = go at 40 km/hr speed1 green light = go at 20 km/hr speedA motorist starts at a point on a road and follows all traffic signals. His car is heading towards the north. He encounters the following signals (the time mentioned in each case below is applicable after crossing the previous signal).Starting point - 1 green lightAfter half an hour, 1st signal - 2 red and 2 green lightsAfter 15 min, 2nd signal - 1 red lightAfter half an hour, 3rd signal - 1 red and 3 green lightsAfter 24 min, 4th signal - 2 red and 2 green lightsAfter 15 min, 5th signal - 3 red lightsThe total distance travelled by the motorist from the starting point till the last signal is
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MCQ-> Read the following passage carefully and answer the question given below it.Certain words/phrase have-been printed in the bold to help you locate them while answering some of the questions. King Hutamasan felt he had everything in the world not only due to his riches and his noble knights but because of his beautiful queen Rani Matsya The rays of the sun were put to shame with the iridescent light that Matsya illuminated with her beauty and brains At the right hand of the king she was known to sit and aid him in all his judicial probes You could not escape her deep-set eyes when you committed a crime as she always knew the and the culprit Her generosity preceded her reputation in the kingdom and her hands were always full to give people in the kingdom revered her because if she passed by she always gave to the compassionate and poor Far away from the kingly palace lived a man named Raman with only ends to his poverty as he had lost all his land to the landlord,His age enabled him little towards manual labour and so begging was the only alternative to salvage his wife and children Every morning he went door to door for some work food or money.The kindness of people always got him enough to take home But Raman was a little self centered His world began with him first followed by his family and the rest So he would eat and drink to his delight and return home with whatever he found excess This routine followed and he never let anyone discover his interest as he always put on a long face when he reached home. One day as he was relishing the bowl of rice he had just received from a humble home he heard that Rani Matsya was to pass from the very place he was standing Her generosity had reached his ears and he knew if he pulled a long face and showed how poor he was she would hand him a bag full of gold coins enough for the rest of his life enough to buy food and supplies for his family.He thought he could keep some coins for himself and only reveal a few to his wife so he can fulfill his own wishes. He ran to the chariot of the Rani and begged her soldiers to allow him to speak to the queen Listening to the arguments outside Rani Matsya opened the curtains of her chariot and asked Raman what he wanted Raman went on his knees and praised the queen I have heard you are most generous and most chaste show this beggar some charity Rani narrowed her brows and asked Raman what he could give her in return Surprised by such a question Raman looked at his bowl full of rice With spite in him he just picked up a few grains of rice and gave it to the queen Rani Matsya counted the 5 grains and looked at his bowl full of rice and said you shall be given what is due to you Saying this the chariot galloped away Raman abused her under his breath This he never thought would happen How could she ask him for something in return when she hadn’t given him anything ? Irked with anger he stormed home and gave his wife the bowl of rice Just then he saw a sack at the enterence His wife said some men had come and kept it there He opened it to find it full of rice He put his hand inside and caught hold of a hard metal only to discover it was a gold coin Elated he upturned the sack to find 5 gold coins in exact for the five rice grains If only I had given my entire bowl thought Raman I would have had a sack full of gold.According to the passage which of the following is definitely true about Rani Matsya ? (A)She was beautiful (B)She was intelligent (C)She was kind....