A spherical drop of radius \( r \) is in equilibrium. The extra surface energy, if radius of bub...

Channel:
Subscribers:
443,000
Published on ● Video Link: https://www.youtube.com/watch?v=oNy5IGjEAr0



Duration: 3:41
10 views
0


A spherical drop of radius \( r \) is in equilibrium. The extra surface energy, if radius of bubble is increased by \( \Delta r \), is ( \( S= \) surface tension)
(a) \( 4 \pi r \Delta r S \)
(b) \( 8 \pi r \Delta r S \)
(c) \( 2 \pi r \Delta r S \)
(d) \( 10 \pi r \Delta r S \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live




Other Videos By PW Solutions


2022-11-07Find the height of liquid in capillary tube, if surface tension of liquid \( =S \), radius of ca...
2022-11-07A soap bubble having radius of \( 1 \mathrm{~mm} \) is blown from a detergent solution having a ...
2022-11-07A certain number of spherical drops of a liquid of radius \( r \) coalesce to form a single drop...
2022-11-07Two small drops of mercury, each of radius \( r \), coalesce to form a single large drop of radi...
2022-11-07A soap bubble, blown by a mechanical pump at the mouth of a tube, increases in volume, with time...
2022-11-07In a soap bubble, pressure difference is (a) \( \frac{2 S_{l a}}{r} \) (b) \( \frac{4 S_{l a}}{r...
2022-11-07A small spherical droplet of density \( d \) is floating exactly half immersed in a liquid of de...
2022-11-07A soap bubble of radius \( r \) is blown up to form a bubble of radius \( 3 r \) under isotherma...
2022-11-07In figure below, pressure inside a spherical drop is more than pressure outside. If a liquid dro...
2022-11-07A \( 10 \mathrm{~cm} \) long wire is placed horizontally on the surface of water and is gently p...
2022-11-07A spherical drop of radius \( r \) is in equilibrium. The extra surface energy, if radius of bub...
2022-11-07A wooden stick \( 2 \mathrm{~m} \) long is floating on the surface of water. The surface tension...
2022-11-07The force required to separate two glass plates of \( 10^{-2} \mathrm{~m}^{2} \) with a film of ...
2022-11-07A thin liquid film is formed between a U-shaped wire and a light slider, supporting a weight of ...
2022-11-07The shape of drops and bubbles are spherical due to its (a) surface with minimum energy (b) surf...
2022-11-07Consider two solid spheres \( P \) and \( Q \) each of density \( 8 \mathrm{~g} \mathrm{~cm}^{-3...
2022-11-07A rain drop of radius \( 0.3 \mathrm{~mm} \) has a terminal velocity in air \( 1 \mathrm{~ms}^{-...
2022-11-07A small sphere of radius \( r \) falls from rest in a viscous liquid. As a result, heat is produ...
2022-11-07Two small spherical metal balls, having equal masses are made from materials of densities \( \rh...
2022-11-07A liquid film is formed over a frame \( A B C D \) as shown in figure. Wire \( C D \) can slide ...
2022-11-07The surface tension of a liquid at its boiling point (a) becomes zero (b) becomes infinity (c) i...



Tags:
pw