Photoelectric EffectHard
Question
By sucking through a straw a student can reduce the pressure in the his lungs to 750 mm of Hg (density = 13.6gm/ cm3).Using the straw he can drink water4 from a glass upto a maximum depth of :
Options
A.10cm
B.75cm
C.13.6cm
D.1.36cm
Solution
Pressure difference created = 10mm of Hg This must be equal to the pressure of water column being created in the straw. If height of water column be h
hρg =
× 13.6 × g
h × 1 = 13.6 ⇒ h =13.6cm
hρg =
× 13.6 × gh × 1 = 13.6 ⇒ h =13.6cm
Create a free account to view solution
View Solution FreeMore Photoelectric Effect Questions
An X-ray photon of wavelength l and frequency n collides with an intially stationary electron (but free to move) and bou...The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy 6 e V fall on it is 4 eV. The...Photoelectrons are emitted by a metal surface only, when :...When a β−-particle is emitted from a nucleus, the neutron-proton ratio :...A source S1 is producing, 1015 photons per second of wavelength 5000 . Another source S2 is producing 1.2 × 1015 ph...