EASY
AP EAPCET
IMPORTANT
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A flat plate of area 10 cm2 is separated form a large plate by a layer of Glycerine 1 mm thick. If the coefficient of viscosity of Glycerine is 20 poise, the force required to keep the plate moving with a velocity of 1 cm s-1 is       
 

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Important Questions on Mechanical Properties of Matter

EASY
AP EAPCET
IMPORTANT
Two rain drops falling through air have radii in the ratio 1: 2. They will have terminal velocity in the ratio________
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AP EAPCET
IMPORTANT
An air bubble of radius 1.0 cm rises with a constant speed of 3.5 mm s-1 through a liquid of density 1.75×103 kg m-3. Neglecting the density of air. the coefficient of viscosity of the liquid is _________ kgm-1 s-1
EASY
AP EAPCET
IMPORTANT
Identify the incorrect statement about 'angle of contact':
(a) Angle of contact depends upon the inclination of the solid surface to the liquid surface.
(b) If the angle of contact of a liquid and a solid surface is less than 90°, then the liquid spreads on the surface of the solid.
(c) Angle of contact increases with increase in temperature of liquid.
(d) The value of angle of contact for pure water and glass is zero.