Assertion : Smaller drops of liquid resist deforming forces bette… - Vidyadip

MCQ

$Assertion :$ Smaller drops of liquid resist deforming forces better than the larger drops
$Reason :$ Excess pressure inside a drop is directly proportional to its surface area.

A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
✓
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

✓

Answer

Correct option: B.

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

b
Smaller drops have larger excess pressure inside. The excess pressure is related to radius as follow $p = \frac{4T}{r}$ That is why smaller droplets resist deforming forces.

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