Which of the following is generally considered as opaque surface towards radiations? ?->(Show Answer!)

1. Which of the following is generally considered as opaque surface towards radiations?

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MCQ-> Read the following passage carefully and answer the questions given below it.Certain words/phrases have been printed in bold to help you locate them while answering some of the questions.Princess Chandravati was very beautiful. She loved all kinds of ornaments and always wanted to wear the most precious and lovely jewels. Once, a jeweller came to the palace and gifted the king a wonderful diamond necklace. It glittered with big and small diamonds. It was certainly a very expensive necklace. The princess fell in love with it as soon as she saw it. So the king presented it to her. From that day on, the princess always wore that necklace, wherever she went. One day before going for a swim in the pond, she took the necklace off and put in the hands of her oldest and the most trustworthy servant. “Hold this and be careful. This is the most precious necklace in the whole world,” she said. The servant was an old woman. She sat under a tree, holding the ornament tightly and waited for the princess. It was a hot afternoon and the servant was very tired so she dozzed off .under the tree. Suddenly the servant felt that someone was tugging at the necklace and she woke up with a start. She looked around but no one was there and the necklace was gone. Scared out of her wits, the old servant started screaming. On hearing her scream the royal guards rushed to her. She pointed towards the direction in which the thief may have gone and the guards ran off that way. There was a poor and dim-witted farmer walking on the same road. As soon as he saw the royal guards running towards him, he thought that they wanted to catch him and started running. But he was not a strong man and could not outrun the hefty guards. The royal guards caught him in no time. “Where is it ?” they demanded, shaking him. “Where is what ?” the poor farmer stammered back. “The necklace you stole 1” thundered one of the royal guards. The farmer had no idea what they were talking about. He only understood that some precious necklace was lost and he was supposed to have it. He quickly replied, “I don’t know where it is now. I gave it to my landlord.” The guards ran towards the landlord’s house. “Give us the necklace right now !” the guards demanded of the fat landlord. “Necklace ? I don’t have any !” the stunned landlord replied. “Then tell us quickly who does,” demanded the soldiers. In order to get the royal guards off his back, the landlord pointed towards a priest who was walking by his house and said, “He does.” The guards now caught hold of the priest who was walking towards the temple and thinking about the lunch he had just eaten. The priest was stunned when one of the burly guards jumped on him and asked about the necklace. He remembered that the minister, Bhupati, was at the temple. He took the guards to the temple and pointed towards the praying minister, “I gave it to him,” he said. Bhupati too was caught and all four men were thrown in jail. The chief minister of the kingdom knew Bhupati well and was sure that Bhupati would never steal. He decided to find out who the culprit was. He hid near the jail where all four men were put and heard them talking. First, Bhupati asked the priest, “Panditji, why did you say that you gave the necklace to me ? I was quietly praying at the temple and now you have landed me in jail for no fault of mine.” The priest looked apologetic. He pointed towards the landlord and said, “I didn’t know what to say. He set the guards on me. I was simply passing by his house and was on my way to the temple.” The land lord looked at the priest sheepishly. Then he turned towards the poor farmer and yelled, “You lazy good-for-nothing man Why did you say that I had the necklace ?” The farmer, trembling under the angry gaze of all three men, said, “I was just walking home, The guards caught me and I did not know what to say.” On hearing, this conversation, the chief minister understood that all the four men were innocent. He immediately ordered the royal guards to search thoroughly, near the pond. The guards searched high and low till they saw something glinting on the tree. On the tree sat a monkey with the princess’ favourite necklace around his neck. It took a lot of coaxing and bananas before the monkey threw the necklace on the ground. The king apologised to all the four men and gave them gold coins as compensation. He requested his daughter to wear the necklace only indoors.Why did the king present the diamond necklace to his daughter ?
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MCQ-> The passage below is accompanied by a set of six questions. Choose the best answer to each question.Understanding where you are in the world is a basic survival skill, which is why we, like most species come hard-wired with specialised brain areas to create cognitive maps of our surroundings. Where humans are unique, though, with the possible exception of honeybees, is that we try to communicate this understanding of the world with others. We have a long history of doing this by drawing maps — the earliest versions yet discovered were scrawled on cave walls 14,000 years ago. Human cultures have been drawing them on stone tablets, papyrus, paper and now computer screens ever since.Given such a long history of human map-making, it is perhaps surprising that it is only within the last few hundred years that north has been consistently considered to be at the top. In fact, for much of human history, north almost never appeared at the top, according to Jerry Brotton, a map historian... "North was rarely put at the top for the simple fact that north is where darkness comes from," he says. "West is also very unlikely to be put at the top because west is where the sun disappears."Confusingly, early Chinese maps seem to buck this trend. But, Brotton, says, even though they did have compasses at the time, that isn't the reason that they placed north at the top. Early Chinese compasses were actually oriented to point south, which was considered to be more desirable than deepest darkest north. But in Chinese maps, the Emperor, who lived in the north of the country was always put at the top of the map, with everyone else, his loyal subjects, looking up towards him. "In Chinese culture the Emperor looks south because it's where the winds come from, it's a good direction. North is not very good but you are in a position of subjection to the emperor, so you look up to him," says Brotton.Given that each culture has a very different idea of who, or what, they should look up to it's perhaps not surprising that there is very little consistency in which way early maps pointed. In ancient Egyptian times the top of the world was east, the position of sunrise. Early Islamic maps favoured south at the top because most of the early Muslim cultures were north of Mecca, so they imagined looking up (south) towards it. Christian maps from the same era (called Mappa Mundi) put east at the top, towards the Garden of Eden and with Jerusalem in the centre.So when did everyone get together and decide that north was the top? It's tempting to put it down to European explorers like Christopher Columbus and Ferdinand Megellan, who were navigating by the North Star. But Brotton argues that these early explorers didn't think of the world like that at all. "When Columbus describes the world it is in accordance with east being at the top, he says. "Columbus says he is going towards paradise, so his mentality is from a medieval mappa mundi." We've got to remember, adds Brotton, that at the time, "no one knows what they are doing and where they are going."Which one of the following best describes what the passage is trying to do?
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MCQ-> Study the lot lowing inforniation carefully and answer IIa’.give-n questions. Point D is 14 m towards the West of Point A. Point B is 4 m towards the South of point D. Point F is 9 al towards the South of point D. Point E is 7 in towards the East of point B. Point C is 4 m towards the North of point E. Point G is 4 m towards the South of point A.Which of the following points are in a straight line ?
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