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Eight spherical rain drops of the same m...

Eight spherical rain drops of the same mass and radius are falling down with a terminal speed of `6cms^-1` . If they coalesce to form one big drop , what will be the terminal speed of bigger drop ? ( Neglect the buoyancy of the air)

A

`1.5 cms^(-1)`

B

`6 cms^(-1)`

C

`324 cms^(-1)`

D

`32 cms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
`V_(B)=n^(2//3)V_(s)`
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Knowledge Check

  • Eight spherical rain drops of the same mass and radius are falling down with a terminal speed of 6cms^(-1) . If they coalesce to form one big drop, what will be its terminal speed? Neglect the buoyancy due to air

    A
    `1.5 cms^(-1)`
    B
    `6 cms^(-1)`
    C
    `24 cms^(-1)`
    D
    `32 cms^(-1)`

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    A
    `32cms^-1`
    B
    `30cms^-1`
    C
    `28cms^-1`
    D
    `24cms^-1`

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    15 cm/s
    B
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    C
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