More viscous oil is used in summer than ...

More viscous oil is used in summer than in winterr in motors due to

rise in temperature in summer, the viscosity of oil decreases

rise in temperature in summer viscosity of oil increases

surface tension of oil increases

surface tension of oil decreases

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ALLEN -ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 1 (Fluid Statics)

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The diagram (figure) shows a venturimeter, through which water is flow...
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With increase in temperature the viscosity of
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