Q. 6

For a surface mol A. the net force on it is zero.

B. there is a net downward force.

C. the potential energy is less than that of a molecule inside.

D. the potential energy is more than that of a molecule inside.

Answer :

Molecules inside a liquid experience a similar force of attraction due to liquid molecules around it from all directions. Molecules on the surface experience force of attraction by the liquid molecules below it and the air molecules above it. The force of attraction of liquid-liquid is greater than that of liquid-gas. Hence, it experiences a net downward force. As a result of this, the potential energy of a surface molecule is more than that of a molecule inside.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

The surface tensiPhysics - Exemplar

Surface tension iPhysics - Exemplar

A hot air balloonPhysics - Exemplar

If a drop of liquPhysics - Exemplar

A wire forming a HC Verma - Concepts of Physics Part 1

For a surface molPhysics - Exemplar

The capillaries sHC Verma - Concepts of Physics Part 1

The free surface Physics - Exemplar

Consider a small HC Verma - Concepts of Physics Part 1

Find the excess pHC Verma - Concepts of Physics Part 1