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  • Can someone explain A sheet can be made water proof by coating it with a substance that changes the angle of contact

A sheet can be made water proof by coating it with a substance that changes the angle of contact

  • Option 1)

    to  \frac{\pi}{2}

  • Option 2)

    to zero

  • Option 3)

    from acute to obtuse

  • Option 4)

    from obtuse to acute

 

Answers (2)

best_answer

As we discussed in concept

Ascent Formula -

For \Theta < 90^{\circ}

For \Theta > 90^{\circ}

For \Theta = 90^{\circ}

- wherein

meniscus (concave) \rightarrow Rise

meniscus (convex) \rightarrow Fall

meniscus (Plane) \rightarrow Plane

 

 From acute to obtuse


Option 1)

to  \frac{\pi}{2}

This option is incorrect.

Option 2)

to zero

This option is incorrect.

Option 3)

from acute to obtuse

This option is correct.

Option 4)

from obtuse to acute

This option is incorrect.

Posted by

prateek

View full answer

2

Posted by

Jayesh charde

View full answer

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