If a soap bubble expands, the pressure inside the bubble :
If a soap bubble expands, the pressure inside the bubble :
Option 1 -
decreases
Option 2 -
increases
Option 3 -
remains the same
Option 4 -
is equal to the atmospheric pressure
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1 Answer
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Correct Option - 1
Detailed Solution:on expansion increase, as a result, decreases.
Similar Questions for you
v? ²/2 + P? /ρ + gh? = v? ²/2 + P? /ρ + gh?
⇒ v? ²/2 + (P? + ρgh + mg/A)/ρ + g × 0 = v? ²/2 + P? /ρ + g × 0
⇒ v? ²/2 + (ρgh + mg/A)/ρ = v? ²/2 . (1)
Using Continuity equation, we can write
Av? = av? ⇒ v? = (a/A)v?
Putting the value of v? in equation (1), we have
(a²/A²)v? ²/2 + (ρgh + mg/A)/ρ = v? ²/2 ⇒ (A² - a²)/A² * v? ²/2 = (ρgh + mg/A)/ρ
⇒ v? = √ [ (A²/ (A²-a²) * 2 (ρgh + mg/A)/ρ] = 3.09 m/s ≈ 3 m/s
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