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
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a
will be more than 10 cm/s
b
will be less than 10 m/s
c
will be equal to 10 m/s
d
cannot be determined due to insufficient data
answer is A.
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Detailed Solution
Terminal velocity VT∝1η, with rise in temperature, viscosity of liquid decreases. As coefficient of viscosity η decreases, VT increases.