X - Rays
X - Rays
The X-rays were discovered by German physicst W. Roentgen. Their frequency range is 1016 Hz to 3x 10- Hz. These are produced when high energy electrons are stopped suddenly on a metal of high atomic number.
X-rays have great penetrating power and so arc used to investigate the structure of objects and to find flaws in metals. This radiation has such high energy that It can damage cells and tissues, and also affect the genetic material inside cells. X-rays are produced when electrons hit a metal surface. This happens inside an X-ray tube. X-rays are used in radiology, to produce images of bones. They are also used in radio therapy, in which X-rays are targeted at cancer cells to kill them or stop them from multiplying.
When a patient undergoes a computed tomography (CT) scan. the X-ray sources and detectors rotate around the person. Computers then analyse the data from the CT scanner to create images of organs in the body. Because of the high energy of X-rays. it is important that people who work with them use protective lead shields and monitor their exposure levels. This is done by using a personal radiation monitoring device. The device is worn for up to three months The total, or accumulated radiation dose is then measured. The employer must ensure that this dose remains below a certain value, to protect the worker from possible harm.
X-ray Inspection System:
This is a machine used to screen luggage for dangerous items. An A-ray generator inside the machine produces X-rays, which are directed at the luggage as it passes through on a Conveyor belt. A-rays pass more easily through less-dense items than through items of high density. Sensors behind the luggage detect variation in penetration of X-rays through the sample. Differences in density can be displayed as different colours so that any items of concern can be identified.
Uses:
X-rays are used
1 In Surgery for the detection of fractures, foreign bodies like bullets, diseased organs and stones in the human body.
2. In Engineering
(i) for detecting faults, cracks, flaws and holes in final metal products
(ii) for the testing of weldings, castings and moulds.
3. In Radio Therapy, to cure un-tracable skin diseases and malignant growths.
4. In Detective Departments for detection of explosives, opium, gold and silver in the body of smugglers.
5. In Industry
(i) for the detection of pearls in oysters and defects in rubber tyres, gold and tennis balls etc.
(ii) for testing the uniformity of insulating material.
As the luggage passes through on a Conveyor belt. Differences in density of items can be displayed on the sensor as different ____________ so that any items of concern can be identified. | |||
| Right Option : B | |||
| View Explanation | |||
X-rays are used In Surgery for the detection of __________________, foreign bodies like bullets, diseased organs, and stones in the human body. | |||
| Right Option : A | |||
| View Explanation | |||
Full form of CT scan is? | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [20]
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thIn terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Aman Kumar Shrivastava
10thThird consective year,my ward is in Abhyas with nice experience of admin and transport support.Educational standard of the institute recumbent at satisfactory level. One thing would live to bring in notice that last year study books was distributed after half of the session was over,though study ...
Ayan Ghosh
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
Shreya Shrivastava
8thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thAbhyas is an institute of high repute. Yogansh has taken admission last year. It creates abilities in child to prepare for competitive exams. Students are motivated by living prizes on basis of performance in Abhyas exams. He is satisfied with institute.
Yogansh Nyasi
7thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thUsually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
Anika Saxena
8thAbhyas is good institution and a innovative institute also. It is a good platform of beginners.Due to Abhyas,he has got knoweledge about reasoning and confidence.My son has improved his vocabulary because of Abhyas.Teacher have very friendly atmosphere also.
Manish Kumar
10thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
Aman Kumar Shrivastava
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thAbhyas academy is great place to learn. I have learnt a lot here they have finished my fear of not answering.It has created a habit of self studying in me.The teachers here are very supportive and helpful. Earlier my maths and science was good but now it has been much better than before.
Barkha Arora
10thWhen I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I also came to know about other subjects such as vedic maths and reasoning.
Sharandeep Singh
7thThe experience was nice. I studied here for three years and saw a tremendous change in myself. I started liking subjects like English and SST which earlier I ran from. Extra knowledge gave me confidence to overcome competitive exams. One of the best institutes for secondary education.
Aman Kumar Shrivastava
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
