At room temperature a small sphere is falling through a viscous liquid at constant velocity of 10 cm/sec. If the temperature of liquid is increased by 30 oC, the terminal velocity of the sphere

At room temperature a small sphere is falling through a viscous liquid at constant velocity of 10 cm/sec. If the temperature of liquid is increased by 30 oC, the terminal velocity of the sphere

  1. A

    will be more than 10 cm/s

  2. B

    will be less than 10 m/s

  3. C

    will be equal to 10 m/s

  4. D

    cannot be determined due to insufficient data

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    Solution:

    Terminal velocity VT∝1η, with rise in temperature, viscosity of liquid decreases. 

    As coefficient of viscosity η decreases, VT increases. 

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