A water proofing agent changes the angle of contact from:

Acute to

π / 2

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π / 2

to obtuse

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Acute to obtuse value

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Obtuse to acute value

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Solution

The correct option is C Acute to obtuse value
Changing angle acute to obtuse helps objects in contact with liquid not getting wet. Cohesive forces becomes greater than adhesive forces.

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Similar questions

Q. Water proofing agent changes the angle of contact:

Q. The value of

a

for which the angle between

\to a = 2 a^{2}^i + 4 a^j +^k

and

\to b = 7^i - 2^j + a^k

is obtuse and the angle between

\to b

and

z

-axis is acute and less than

\frac{π}{6}

Question 12
If the sum of two angles is equal to an obtuse angle, then which of the following is not possible?
a) One obtuse angle and one acute angle
b) One right angle and one acute angle
c) Two acute angles
d) Two right angles

Q. Which of the following is arranged as right-angled triangle, acute-angled triangle and obtuse-angled triangle respectively from left to right?

Q. The values of

x

for which the angle between

\to a = 2 x^{2}^i + 4 x^j +^k

and

\to b = 7^i - 2^j + x^k

is obtuse and the angle between

\to b

and the

z

-axis is acute and less than

\frac{π}{6}

, are

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A water proofing agent changes the angle of contact from:

The correct option is C Acute to obtuse valueChanging angle acute to obtuse helps objects in contact with liquid not getting wet. Cohesive forces becomes greater than adhesive forces.

The correct option is C Acute to obtuse value
Changing angle acute to obtuse helps objects in contact with liquid not getting wet. Cohesive forces becomes greater than adhesive forces.