. One can undertake an exercise to know the level of skills developed in making measurements using Vernier Callipers. Objects, such as bangles/kangan, marbles whose dimensions can be measured indirectly using a thread can be used to judge the skill acquired through comparison of results obtained using both the method
Answers
Explanation:
in the first part of this given question, we have to find the diameter of a trade. It was an immediate skip. By only using a motor skill. It is not possible to measure the thickness or the diameter of trade White because usually the thickness of a thread will be much more less compared to the smallest division in motor skills. Okay, so to measure the thickness of a trade or to measure the diameter of a trade, we can use around like this. So what we should do on this rod, we can I wrapped the trade in such a way did each of the turns are very, very close to each other so that they are touching each other. Okay, so after the wrapping is done, we can count the total number of it happens that has been done over this rod. Okay, once again, the wrapping has to be done in such a way that each of the terms has to be letting each other. Okay. If n is equal to the total number of runs on the around and now by using the major skill. If we can measure this length later that is L. Then we can say the diameter and thickness of the rod is nothing but the consecutive spacing between the two terms. Okay? So if that is D let's say so the representing what the diameter of the threat diameter of the tread. So if these representing the diameter of the thread then we can't write. L. Is going to be equal to N times D. Or from the reckoned right diameter of the road. Study of the thread will be equal to L. By and so in this way we can measure the diameter of the thread in the second part of this question. It is given that the school is having scoop. Each is equal to one and circular skill division That we can do not by c. s. d. that is given to us 200. So then the least count of the screw gauge that we can run away. Elsie that define us screw pitch by circular scale division which is equal to one x 200 millimeters. And this expression is saying that if the number of circular scale division is increasing in that case The least count of the screw valuable 20s. So it's ridiculous. Now if the least count office Krueger's is less, that means that device is much more precise for measurement of any length. Okay, now there is some limitation up to raise. We can keep the southwest division show that the measurement will be precise. We cannot simply increase the number of circular scale that we can up to a certain extent. Right? Suppose here is the circular scale of the of a school bitch. So there are certain number of psychological divisions. Okay now if you increase the number of circular skill division in that skill so that now the scaling is very close to each other. In the 2nd case during measurement it would be very difficult for us to distinguish between any two consecutive line because of the limitation of the regulation of human. Right, okay. So that is the case. Over here. We cannot we cannot increase the circular skin division of a screw baggage. Two. Any extent as it will introduce and aided during measurement due to limitation due to limitation of the resolution. Mhm. Human. I in part c if we increase the total number of measurements in that case the probability. So I'm writing this way forward more number of measurements. The probability of getting random positive error is very close. Two probability. Uh huh. Getting random negative in it. So that in a large number of measurement in a large number of measurements, the positive and negative errors will likely to can sell each other. On the other hand, if we do less number of the humans for less number of measurements, it is possible that we get more positive ERIN and then negative edit and what is your answer. So in this case as the we can get more number of course two minutes than negative haters. So the net errors in the measurement process will not cancel it. The net Aiden in the major mint process will not cancel with each other. So in the measurement process we will get some error. If we do less number of measurements. That is why it is always good to have more number of measurements during any experiment