Bt sir l hv a doubt.....jo surface k molecules h unme to downward direction m force lg ra h than surface tension capillary action ko kaise promote kr rha h jo ki upward direction m h ??
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Thanks sir , we really need teachers like you , who teaches from heart, you explaing power is really owsome, yesterday I was searching for surface tension on you tube and I watched many videos but I couldn't understand, but suddenly I found your videos, it's bravo. We always support teachers like you ,keep it up sir.
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Surface tension is directly proportional to capillary action because when surface tension increases more molecules will be attracted by the bulk of the liquid downwards therefore decreasing the surface area, this will lower the surface of the liquid more to the opening of the tube forcing the water effectively into it. This increases capillary action. If the surface tension is less, the liquid molecules at surface wont be experiencing enough attractive force to be pulled down to effectively enter the tube. Thus less liquid enters the capillary. This decreases capillary action.
Tomorrow I will upload it full theory video.each topic with numerical questions you please watch this I am sure after this you will be solve 95 plus % questions.
Sir we have done a active in our class , ma'am toke a beaker and fill it with water and then she take a cloth and cover the beaker with the cloth tightly and then she turn the beaker down 👇 and water does not fall down ma'am asked from me that why the water didn't fall down i said that when you covered the beaker with cloth tightly the air get comprises in beaker and the water molecules were packed tightly in simple words due to the air lock water molecules were packed tightly then you lose the cloth the air which was tight it get lose then the water fall down. But maam said to me that search about Surface tension. Did my answer is wrong?
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