Photoelectric EffectHard
Question
The work done in blowing a soap of radius 0.2m given that the surface tension of soap solution is 60 × 10-3 N/M is
Options
A.24π × 10-4J
B.24π × 10-4J
C.96π × 10-4J
D.1.92π × 10-4J
Solution
W = TᐃA = T × 2 [4πR2]
60 × 10-3 × 8π × (0.2)2
1.92π × 10-4 J
60 × 10-3 × 8π × (0.2)2
1.92π × 10-4 J
Create a free account to view solution
View Solution FreeMore Photoelectric Effect Questions
Photoelectric effect takes place in element A. Its work function is 2.5 eV and threshold wavelength is λ. An other ...To increase the hardness of X-rays in coolidge tube we should -...Threshold wavelength for photoelectric emission from a metal surface is 5200. photoelectrons will be emitted when this s...Which of the following wavelength is not possible for an X-ray tube which is operated at 40 kV:-...Let Fpp, Fpn and Fnn denote the magnitudes of the nuclear force by a proton on a proton, by a proton on a neutron and by...