Duration: 3:11

2 views

0

Water rises to a height of \( 10 \mathrm{~cm} \) in a certain capillary tube. An another identical tube when dipped in mercury the level of mercury is depressed by \( 3.42 \mathrm{~cm} \). Density of mercury is \( 13.6 \mathrm{~g} / \mathrm{cc} \).
\( \mathrm{P} \) The angle of contact for water in contact with glass is \( 0^{\circ} \) and mercury in contact with glass is \( 135^{\circ} \). The ratio of surface tension of water to that of \( \mathrm{Hg} \) is
(a) \( 1: 3 \)
(b) \( 1: 4 \)
(c) \( 1: 5.5 \)
(d) \( 1: 6.5 \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live