Q.12097·Miscellaneous·2014·EasyAn earthquake comes like a thief in the night, without warning. It was necessary, therefore, to invent instruments that neither slumbered nor slept. Some devices were quite simple. One, for instance, consisted of rods of various lengths and thicknesses which would stand up on end like ninepins. When a shock came it shook the rigid table upon which these stood. If it were gentle, only the more unstable rods fell. If it were severe, they all fell. Thus the rods by falling and by the direction in which they fell, recorded for the slumbering scientist, the strength of a shock that was too weak to waken him and the direction from which it came. But, instruments far more delicate than that were needed if any really serious advance was to be made. The ideal to be aimed at was to devise an instrument that could record with a pen on paper the movements, of the ground or of the table, as the quake passed by. While I write my pen moves but the paper keeps still. With practice, no doubt, I could, in time, learn to write by holding the pen still while the paper moved. That sounds a silly suggestion, but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves. But when table, penholder and paper are all moving how is it possible to write legibly? The key to a solution of that problem lay in an everyday observation. Why does a person standing in a bus or train tend to fall when a sudden start is made? It is because his feet move on, but his head stays still. Why was it necessary to invent instruments to observe an earthquake?View question
Q.12098·Miscellaneous·2014·EasyAn earthquake comes like a thief in the night, without warning. It was necessary, therefore, to invent instruments that neither slumbered nor slept. Some devices were quite simple. One, for instance, consisted of rods of various lengths and thicknesses which would stand up on end like ninepins. When a shock came it shook the rigid table upon which these stood. If it were gentle, only the more unstable rods fell. If it were severe, they all fell. Thus the rods by falling and by the direction in which they fell, recorded for the slumbering scientist, the strength of a shock that was too weak to waken him and the direction from which it came. But, instruments far more delicate than that were needed if any really serious advance was to be made. The ideal to be aimed at was to devise an instrument that could record with a pen on paper the movements, of the ground or of the table, as the quake passed by. While I write my pen moves but the paper keeps still. With practice, no doubt, I could, in time, learn to write by holding the pen still while the paper moved. That sounds a silly suggestion, but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves. But when table, penholder and paper are all moving how is it possible to write legibly? The key to a solution of that problem lay in an everyday observation. Why does a person standing in a bus or train tend to fall when a sudden start is made? It is because his feet move on, but his head stays still. The passage says that early instruments for measuring earthquakes were:View question
Q.12099·Miscellaneous·2014·EasyThis rule of always trying to do things as well as one can do them has an important bearing upon the problem of ambition. No man or woman should be without ambition, which is the inspiration of activity. But if one allows ambition to drive one to attempt things which are beyond one’s own personal capacity, then unhappiness will result. If one imagines that one can do everything better than other people, then envy and jealousy, those twin monsters, will come to sadden one’s days. But if one concentrates one’s attention upon developing one’s own special capacities, the things one is best at, then one does not worry over much if other people are more successful. Which one of the following statements can be assumed to be true?View question
Q.12100·Miscellaneous·2014·EasyA shopkeeper sells his articles at their cost price but uses a faulty balance which reads 1000 g for 800 g. What is his actual profit percentage?View question
Q.12101·Miscellaneous·2014·EasyIf 10 persons can dig 8 feet trench in 12 days, then how many days will 8 persons take to dig 6 feet trench?View question
Q.12102·Miscellaneous·2014·EasyThose responsible for teaching young people have resorted to a variety of means to make their pupils learn. The earliest of these was the threat of punishment. This meant that the pupil who was slow, careless or inattentive risked either physical chastisement or the loss of some expected privilege. Learning was thus associated with fear. At a later period, pupils were encouraged to learn in the hope of some kind of reward. This often took the form of marks awarded for work done and sometimes of prizes given at the end of the year to the best scholar. Such a system appealed to the competitive spirit, but was just as depressing as the older system for the slow child. In the nineteenth century sprang up a new type of teacher, convinced that learning was worthwhile for its own sake and that the young pupil’s principal stimulus should neither be anxiety to avoid a penalty nor ambition to win a reward, but sheer desire to learn. Interest, direct or indirect, became the keyword of instruction. The educational system which caused fear in the pupil’s mind was based on:View question
Q.12103·Miscellaneous·2014·EasyConsider the following : 1. The arithmetic mean of two unequal positive numbers is always greater than their geometric mean. 2. The geometric mean of two unequal positive numbers is always greater than their harmonic mean. Which of the above statements is/are correct ?View question
Q.12104·Miscellaneous·2014·EasyConsider the following statements in respect of a discrete set of numbers : 1. The arithmetic mean uses all the data and is always uniquely defined. 2. The median uses only one or two numbers from the data and may not be unique. Which of the above statements is/are correct ?View question
Q.12105·Miscellaneous·2014·EasyS₁ : The lions used to be widely distributed in Africa and Asia. S₆ : No hunting is permitted in such reserved areas. P: There are special forest zones set aside for wildlife in various countries. Q: Indiscriminate killing by hunters has been the cause of this drastic fall in their numbers. R: Today they are a relatively rare species. S: If the species survives at all, it will be only in national parks. The proper sequence should be:View question
Q.12106·Miscellaneous·2014·EasyS₁ : The woman who lives a normal life is able to check the swelling conceit and egotism of her menfolk simply because her outlook is so different. S₆ : And both ranges of interest make her what only fools deny her to be, namely, essentially practical; her eye is steadily fixed on the concrete thing, and she mistrusts that chasing of the wild goose which is one of the chief pastimes and delights of man. P: She is primarily concerned with little ordinary things, the minutiae of talk and behaviour for example, on the one hand, and with very big ones, the colossal elementary facts of life, such as birth, mating and death on the other. Q: The first more personal and particular whereas the second, less so. R: Her interests are at once narrower and wider than those of men. S: It is more personal and yet more impersonal. The proper sequence should be:View question
Q.12107·Miscellaneous·2014·EasyS₁ : What soda-water is composed of you may see for yourself if you watch your glass as it stands on the table after you have slaked your first thirst. S₆ : 'Carbonic acid' is the old name for it, but it is more correct to name it, when it is out of the water, 'Carbon dioxide'. P: The liquid is plain water, as you will find out if you are too slow about drinking. Q: You will see that it is separating into two different things, a liquid and a gas. R: The gas is so heavy that you can fairly drink it from the glass, and it has, as you know, a tingle-tangle taste. S: The other is a heavy, sour and invisible gas that slips up through the water in little bubbles and collects in the empty half of the glass. The proper sequence should be:View question
Q.12108·Miscellaneous·2014·EasyS₁ : What Martin Luther King, the peaceful warrior and his followers suffered, it is very difficult to describe. S₆ : For they had taken an oath to ‘refrain from the violence of the fist, tongue or heart’. P: The police used fire hoses and ferocious dogs to rout them. Q: The law courts sent them to solitary confinement where not a ray of the sun entered. R: They were abused and stoned by the mob, slapped and kicked by the police. S: They suffered and tolerated all this without ever lifting a hand in self-defence. The proper sequence should be:View question
Q.12109·Miscellaneous·2014·EasyThe following table gives ‘less than’ type frequency distribution of income per day : Income (₹) Number less than of persons 1500 100 1250 80 1000 70 750 55 500 32 250 12 What is the modal class ?View question
Q.12110·Miscellaneous·2014·EasyWhich of the following items of information is a good example of statistical data ?View question
Q.12111·Miscellaneous·2014·EasyThe mean of the following distribution is 18. Class interval Frequency 11 – 13 3 13 – 15 6 15 – 17 9 17 – 19 f 19 – 21 7 21 – 23 5 23 – 25 4 What is the value of f ?View question
Q.12112·Miscellaneous·2014·EasyConsider the following statements pertaining to a frequency polygon of a frequency distribution of a continuous variable with seven class intervals of equal width : 1. The original frequency distribution can be reconstructed from the frequency polygon. 2. The frequency polygon touches the x-axis in its extreme right and extreme left. Which of the above statements is/are correct ?View question
Q.12113·Miscellaneous·2014·EasyConsider the following in respect of the variate which takes values 2, 2, 2, 7, 7, 7, 7 : 1. The median is equal to mean. 2. The mode is both 2 and 7. Which of the above statements is/are correct ?View question
Q.12114·Miscellaneous·2014·EasyWhat is the area of the larger segment of a circle formed by a chord of length 5 cm subtending an angle of 90° at the centre ?View question