A: Stoke's formula for viscous drag is not really valid for oil -drops of extremely minute sizes. R: Stoke's formula is valid for motion through a homogeneous continuous medium and the size of the drop should be much larger than the intermolecular separation in the medium for this assumption to be valid.

A: Stoke's formula for viscous drag is not really valid for oil -drops

1.	A: Stoke's formula for viscous drag is not really valid for oil -drops of extremely minute sizes. R: Stoke's formula is valid for motion through a homogeneous continuous medium and the size of the drop should be much larger than the intermolecular separation in the medium for this assumption to be valid.
Answer» If both ASSERTION & REASON are true and the reason is the correct EXPLANTION of the assertion , then mark (1) if both Assertion & Reason are true but thereasonis not the correctexplantion of theassertion , then mark (2) If Assertion is true statement but Reason is false,then mark (3) If both Assertion and Reason are FALSESTATEMENTS, then mark (4) Answer :A

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