1.

If two soap bubbles have radii in the ratio of 1:2 then the ratio of excess pressure will be?​

Answer»

≡QUESTION≡

If two soap BUBBLES have radii in the ratio of 1:2 then what is the ratio of  the excess pressure ?​

                                                         

║⊕ANSWER⊕║

The excess pressure inside a soap bubble is denoted by the formula:

Δ P = 4S / R

Excess pressure is INVERSELY proportional to the radius for a GIVEN fluid.

GIVEN

R₁/R₂ = 1/2

p₁/p₂ = (4S/R₁) / (4S/R₂)

p₁/p₂ = R₂/R₁

p₁/p₂ = 2/1

∴ The ratio of excess pressure in the two soap bubbles will be in the ratio 2:1 (INVERSE of radius ratio).

                                                         



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