Two long vertical parallel plates at small separation d are lowered into water.

Question

If the temperature of a metal is increased ,the temperature coefficient of the residence.

Answer 1

Correct option is: \(\frac{2T}{pdg}\)

Ascent formula h = \(\frac{2T\,cos\theta}{prg}\)

where,

T = surface tension

θ = contact angle

r = separation small

ρ = density

g = acceleration due to gravity

given,

θ = 0°

r = d

Then, the rise of liquid column

h = \(\frac{2T\,cos\,0^\circ}{pdg}\)

∵ cos 0° = 1

h = \(\frac{2T}{pdg}\)