A ring is cut from a platinum tube having 10 cm internal and 11 cm external diameter. It is supported horizontally from a pan of balance, so that it comes in contact with water in a glass vessel. What is the surface tension of water if an extra, 4.752gwt is required to pull it away from water ? (g=10m//s^2)

A ring is cut from a platinum tube having 10 cm internal and 11 cm ext

1.	A ring is cut from a platinum tube having 10 cm internal and 11 cm external diameter. It is supported horizontally from a pan of balance, so that it comes in contact with water in a glass vessel. What is the surface tension of water if an extra, 4.752gwt is required to pull it away from water ? (g=10m//s^2)
Answer» <html><body><p>`7.<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a> xx 10^(-2) "N/m"`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/72-334274" style="font-weight:bold;" target="_blank" title="Click to know more about 72">72</a> "N/m"`<br/>`14.4 xx 10^(-2) "N/m"`<br/>`<a href="https://interviewquestions.tuteehub.com/tag/32-144-273643" style="font-weight:bold;" target="_blank" title="Click to know more about 144">144</a> "N/m"`</p>Answer :A</body></html>