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Physics
Identify the false statement from the following
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Q. Identify the false statement from the following
CMC Medical
CMC Medical 2012
A
If cohesive force = adhesive force, then angle of contact, $ \theta =90{}^\circ $
B
If cohesive force < adhesive force, then angle of contact, $ \theta <90{}^\circ $
C
If cohesive force > adhesive force, then angle of contact, $ \theta >90{}^\circ $
D
If the radius of capillary is reduced to half, then the rise of liquid column becomes four times
Solution:
As the rise of liquid column, $ h\propto \frac{1}{r} $ Then, by reducing the radius of capillary to half, the rise of liquid will be two times.