Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
If T is the surface tension of the soap solution the amount on work done blowing a soap bubble from a diametre D to 2d is
Let r be the instantaneous radius of the bubble in the process of enlargement and let the radius increases to r+dr. Then increase in surface area ds = 4*pi*(r+dr)^2 - 4*pi*r^2 = 8*pi*rdr (neglecting 4*pi*(dr)^2 which is small)
Now work done in increase of this surface area dw = T*ds (T surface tension of soap solution)
As tehre are two free surfaces of soap bubble so net work done dw = 16*pi*T*rdr
therefore net work done in increasing diameter D to 2d is W = 16*pi*T ∫D/2 d r dr = 8*pi*T*(d^ 2 - (D^2)/4)
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question
Win Gift vouchers upto Rs 500/-
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !