Photoelectric EffectHard
Question
A soap bubble in vacuum has a radius 3cm and another soap bubble in vacuum has radius 4cn. If two bubbles coalesce under isothermal condition. Then the radius of the new bubble will be:
Options
A.7 cm
B.5 cm
C.4.5 cm
D.2.3 cm
Solution
If r1, r2, r be radius of soap bubbles before and after the coalesec & r1, r2, and p the pressure then, applying gas laws equation
p1V1 + p2V2 = pV
r12 + r22 = r2
32 + 42 = r2 ⇒ =
= 5 cm
p1V1 + p2V2 = pV
r12 + r22 = r2
32 + 42 = r2 ⇒ =
= 5 cmCreate a free account to view solution
View Solution FreeMore Photoelectric Effect Questions
A free neutron decays into a proton, an electron and :...Work of 3.0 × 10-4 joule is required to be done in increasing the size of a soap film from 10cm × 6cm to 10cm ...The photoelectric threshold wavelength of a certain metal is 3000. If the radiation of 2000 is incident on the metal :...The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy 6 e V fall on it is 4 eV. The...The order of energy of X-ray photon is :-...