to determine the surface tension of a liquid by capillary rise method #12thphysics #surfacetension

Hello friends and welcome to my channel So friends, I'm Sachin Sukla and you are watching A2J Practical. So, friends, today's experiment is basically experiment number 2. And I'm starting the physics experiment Its name is Surface Tension Thus, we are going to determine the surface tension of the given liquid by the capillary rise method. In this, we are going to use a traveling microscope. Friends, why is it called a traveling microscope? Because it has some screws with the help of which we can loosen it. You can see, we can move it in any direction. You can see, we can move it up and down. And we can also loosen the one below That's why it's called a traveling microscope. So let's start the experiment Friends, you just have to do one thing Support this channel and support me So that I can make lots of videos for you And stay connected to this channel Because all the experiments in physics and chemistry are presented on this channel So go and check it out So let's start the experiment I'm going to tell you the list count here List count is a very important topic. Many people don't understand This is your main scale This large scale is called the main scale. And this small scale is called a vernier scale. So this is a vernier scale. And this is our main scale And this is the same as above You can see here There are two scales here This long line This one So this is the main scale And this small scale You can see This is called a vernier scale. This is your main scale And this is your vernier scale. So there are two scales present here One is present above. Now you will see the main scale What is seen on the main scale How many divisions are there in 1 cm? This is the smallest count You can see There is a small division in between And there is a major division So there are 20 divisions in 1 cm. How many divisions are there? 20 You can see There is a small division next to 0 And there is a large division next to 0 So there are 20 divisions in 1 cm. How many divisions are there in 1 cm? Now I will calculate. What is the scale of a small line? So this is the scale And there are two screws here. You can see the first screw. We can loosen this screw. If you loosen this screw Then You can move it. But if you tighten this screw Then It will be jammed. Now I'm tightening it. Now it's stuck. There is a screw behind There is a screw here. If you loosen this screw Then you can move it You can move it. This is the second screw. There is another screw here. This one If you loosen this You can move it. There are two parts. There are two lenses. One lens is here And another lens is behind This is an objective lens. And this is the eyepiece lens And this is the objective lens We focus on any object. This is a knob. We can move it. Now, friends This is a fine adjustment screw. OK There are three types of screws. We can fine-tune it. You can see There is a screw here. And another one here And this is for moving the surface This is a fine adjustment screw. So basically there are three fine adjustment screws. So this is our vernier scale. Let me show you how I calculated the least count. I have shown you the least count. How to calculate the least count Let me tell you The formula for least count Is Smallest Division Division on main scale Divided by Total Division On the vernier scale Vernier scale So The reading on the main scale We divide it by the vernier scale. Let me show you. The upper one is Vernier scale And the long one is Main scale 20th Division And on the main scale 1, 2, 3, 4, 5 We consider 1 as 10 10, 20, 30, 40, 50 So in one line There are 50 divisions. On the main scale There are 20 divisions. From 0 to 1 So we have to find out On the main scale There are 20 divisions. 20 So in one small line What will be the value of 20? In one small line There are small lines. So what will be the value of 20? 1 divided by 20 equals 0.05. If you do 1 divided by 20 You will get 0.05 cm If you do 1 divided by 20 The formula for least count Smallest division of main scale Smallest division of Vernier scale 0.05 50 0.001 cm Least count Smallest division on main scale Divided by the total division on the vernier scale In this, the zero that appears as one is actually a one. Two to four to such 10 will become 20, 30, 40 Exactly, that's what I said, from 40, 50 from there Had been deviated What do we need to do now? We currently have some major measurements to follow. So I'll let you know. The first one that comes to us Measure up radii and bore measurements So, you can see this is a capillary. And in this, the smallest you The tiny hole that will appear in it Alright We need to determine the radius of this small hole. So, can you scale this up to a major size, or can't you? The hole that will be visible in this But what can we do with the microscope's stage? We can revitalize our enterprise and sustain its vitality by focusing on what we have observed. So, in this, we will stand firm on the principles of Maitri and uphold the values. They will go to the other side of the river to collect camphor. He is calling today. First Fas TCR crossover Do better than this voice Clean stinks It is done. The second one goes Yes, just before Everyone's wind is blown away. Cross Vinajer's game is cut off When did you last see Panaai? Chahvali Phalidemikrakrishi Krip Maankis Surtaha The things you received in the income are to be sold. After the Thikomen Ghuul, the milly will be carried out. Don't say this, don't say that, just answer This is your cross wire. And the second time, what do you need to do? I will also tell you with the help of the adjustment screw Once, you must not take this side. Look at this side, okay Once these holes are here, this is the side. And once these holes are said, this is the side. You also need to do the same for parallel. Once in a while, just take access to your bar, grab the goods If you are taking one side, consider it as x. Now, what should we consider these people on the other side to be? Y, the other side of the Bar isko kya bologe WAI access wala likho ge Then will you also do this one perpendicular? The one above is x people, and the one below is the one What will you take out? What will you take? What will you take? What about the inside of these boards that are appearing? What should we do about it? What diameter will they measure out for it? This is my capillary, and this capillary is mine. There is a board, and we are to this board But the people of Ganga, they will meet you once This side's find-out cross mark and once We need to find out about the side of it. When we were up there at the bar, we had Where you can lift this up from here Fine adjustment written with the help of Skuru The objective lenses that I will place here for it What should I do with this? I'll measure it very carefully. Alright, then I'll take a look at this here. And whoever shows us its radius Alright, I'll set it to EBAR. I am trying my best to write here with the camera I brought. that the board which has a detached hole appearing in it How do you need to adjust on the cross mark? It seems like friends are showing up Exactly, you'll keep one side, you're clearly showing it. You must be seeing it If we place you on one side, you will become the x-axis. And now, using the help of the fine adjustment screw What should I do with him? I'll move him in the other direction. So what will happen to me? What will happen to me if you move? You are showing the move that is taking place You must be seeing these zeros, right? The skill he has, basically, wherever The one you touch is your main skill. If you're reading, then you're seeing this line with the letter A at position 0. Touching here at 3.5 Just a little bit up, when my reading arrives today How much will it be? 3.5 You know, I was telling you it's 0.05 So 3.5 3.505 will be the first one you read Coming, I've got you on the side, x It is shown here inside the axis. Now let's see how to touch the Verner skill If you stay, you'll have to keep coming here. The 30 you're seeing Look, this is the thirtieth one, this is for you Here it is fully coinciding. You must be seeing the one open in front of me in the image. You should see him coincidentally exactly like this You can also see the stickers in my image. So it's looking at 33 It is exactly coinciding with this line. So, what do you have regarding the 30th? The vernier scale reading is So you just need to calculate this; let me show you. How to calculate You are watching family reading So I came. 3.505 had come Bore's reading has arrived. But you're not supposed to write it like this How do you write this? You were given the main scale reading. So you're the one who's been saying that 3.505 You were given the vernier scale reading. So, how many tomatoes did I get? I got 30. How many were given? 30 What should you do with 30 now? Do not multiply by list count How many 0.0阱 What is this, your list count? Okay? So if you multiply this by this, then You will get it 0.03 0.03 So what do you need to do? Add 3.50 0.003 Then you will get it. 3.508 Here you will get 3.508 Elsewhere, I had calculated the y-axis. So for the y-axis How much did I receive? I mean, when I had him there He had taken it away by moving it. I along the y-axis What was done to him? Adjusted They do not go to that side there. So how much do I get? It has become 5. 6 7 So, where is the 0 touching? 2.7 pence And its one year still reading Where are we looking? It's a coincidence happening So, you're looking at it This is 25. So this will be it. My reading for the y-axis Will he come today? Right now, my y other side of the y boards' y cm I had taken it How much was mine? He came at 2.7 Alright And the one year still Pay one year still pay The verse of my reading How many verses are there in 25? So you have 25 on What to do So if you're on the 25th list count from We will multiply 25 into 0.001 subform It will be obtained. 2.7 plus 0.025 Alright So right now I'm going to do this Add Then it will definitely come to me. 2.725 Alright So I am with you I'll take it. 2.725 Alright What do you have right now? Second reading Timemeter diameter To remove What do you need to do? x - y So this is your x is yours and yours alone This is y. So you have to do this in it as well What should be done here? This one subtract So you are this can subtract Fends So 3.535 minus 2.725 If you Hello, I'm here for you Below is the post Don't do it like that, minus it either Okay 3.635 Mains 2.825 You will get it 0.8 Forest What do you need now? To remove Mein I mean What should I do with this? Nusrī reading To turn off Right on time So 0.808 Co If you Then you will get it. 2.404 And same if you also multiply this by 2 We will divide by 0.81 Then it will be found here. 0.405 Next is the Y Access ones You must have taken the reading. I mean, you're on top of the surface You took out the reading, didn't you? Perpendicular to this for this I have told you about the diameter. The upper and lower ones both have access. It has to be taken out When I took the one above there So I got 6.1066 And here, when I had taken it out I was given 7.2066 And when I came back, I saw the one from Uffar When I finally pulled out the one from the back So I got the wahfe 6.925 What do we need to extract from this now? Diameter, to make diameter What do you basically have to do? 0.1216 0.0608 0.281 0.1405 0.806 0.809 0.001 0.071 They are making noise in the Mahabharat. So, you need to fill it out. While your Ludaab Coplerie's surface liquid has been touched When you become a liquid nitrogen in the pain chamber, Ganga It had become a whirlwind on the surface. It was a time of hardship. What are we going to do now? After all, the summer breeze has awakened the path, and we are walking along it. You should see Miniskirt right in front of me, so focus on me exactly like that, and whatever reading you bring, whatever comes your way. What needs to be done is to note down the meniscus, meaning you people are looking at it. It has a structure similar to a cob, and that's the Pro Mark. I keep focusing on him, so I'll start. How much will the reading of skill come within you? 4 My player, this one here, the one who is 10, what is he doing? Vernier main scale, look here at 4.5 exactly No accident is taking place. Is anything at all happening? So how much will this be, 10? Prindus, you've removed the miniscus, which we had placed on H1. Dino will take over here. Now it's your second part. You must be seeing in the image the pointeromed tip you see Exactly opposite direction, vertically inverted on the cross What is this attachment? So completely, what should I do with this? It's here, the tea is ready, so let's go, I'll take this O ye who have come, gather together, O ye who have come to this sacred place, rise up, O Pandit, the one who has come to the gathering After that, I had also taken the second reading, so I had found it there. Three points Nine Fat is fine if Now what do you want me to do? I found VSAR there, Trinityfy. And do you know the Lee's count, how much it is, so you know Multiply by 25 from the Leis County, and you will get 0.25 and 0.025 3.98 was Adesena; he will be found. 4.005 in Here, the scale reading tip on the bicicle is up to the point As you can see in the image, I found it, so how much did I get? Here, here, I got 2.7, correct It was 2.7, and V. S. Arya's Tom The reading was 25, and you need to find S2. So how will you calculate S2? You'll do B plus N into list count. How old are you? And how much is the list count? 0.05 into 0.001 will you do So you'll get how much 0.025 Now, what should I do with it? Just bypass 2.7. #/2.7 flush 0.025, and you will get it 2.725 After that, I had another reading. So I received here 2.6 million, and the one The reading on Vernon's skin was my income, which was 40. So you have to do the same thing, you have to read the vernier scale's reading. Multiply 40 by 0.001 Then you will get 0.04, and multiply it by 0.04. What you need to do is just cross over from 2.6, and you'll get it. Now you need to calculate h1 equal to h1 minus h2 So this is your h1 and your h2, so you need to subtract both of them. So, what is 4 point? Depo 4.01 You will get minus 2.725 1.285 is fine from here, the other thing From here, how much did you receive? h2 So what is 1.365 to you, okay, both of them So it was 2.865, but you got it It will go, okay So you will get 1.325 Now you don't need to do anything about the fronts Your value is displayed here. Did you get anything, H? 1.325 It came from here After that, AR R, look here, it's given right here. 0.2525 Mr. Pintu Value of the soul What will the value of the jeep be today? 918 Now you're going to face everyone head-on What does it mean to divide by 2? Divide by 2 after doubling it. Then you will receive it. 163.9 What do you need me to do now? 900 centimeters to newton What do you need to do with this? It has to be multiplied by 10 raised to the power of minus 3. So, multiply 10 rusts by minus 3, and you'll get 0.163 How much will you get? 0.163 How much is the small division now in the de me skill? 0.05 You have seen it, haven't you? Total lumber is now division now vernier skill 50 And Liss Count, how much was ours? 0.001 Now you have to look at the result here that And in this How much will it cost in Newterm Salometer? Multiply 10 minus 3 by 3 minus 3. So it will be 0.163 So, the front side here shows all the experiments here. How did I do it, how did I manage to do it