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If a soap bubble of radius 3 cm coalesce...

If a soap bubble of radius 3 cm coalesce with another soap bubble of radius 4 cm under isothermal conditions the radius of the resultant bubble formed is in cm

A

7

B

1

C

5

D

12

Text Solution

Verified by Experts

The correct Answer is:
C
`r=sqrt(r_(1)^(2)+r_(2)^(2))`
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Knowledge Check

  • If a soap bubble of radius 3 cm coalesce with another soap bubble of radius 4 cm under isothermal conditions the radius of the redultant bubble formed is in cm

    A
    7
    B
    1
    C
    5
    D
    12

  • A soap bubble of radius 6 cm and another bubble of 8 cm coalesce under isothermal xonditions in vacuum. The radius of the new bubble is

    A
    3 cm
    B
    4 cm
    C
    10 cm
    D
    7 cm

  • Two soap bubbles of radii 1 mm and 2 mm merge isothermally . Then radius of the new bubble formed would be

    A
    3 mm
    B
    2/3 mm
    C
    3/2 mm
    D
    ` sqrt(5)` mm

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