## Angle Of Contact-Basic

Compared to other sections, Physics is considered to be the most scoring section. If prepared thoroughly, Physics can help students to secure a meritorious position in the exam. These questions are very important in achieving your success in Exams after 12th.

Q1. A liquid does not wet the sides of a solid, if the angle of contact is

•  Zero
•  Obtuse (More than 90o)
•  Acute
•  90

Obtuse

Q2. The meniscus of mercury in the capillary tube is

•  Convex
•  Concave
•  Plane
•  Uncertain

Convex

Q3. When the temperature is increased the angle of contact of a liquid

•  Increases
•  Decreases
•   Remains the same
•  First increases and then decreases

Decreases

Q4.  The water proofing agent makes an angle of contact

•  From acute angle to obtuse angle
•  From obtuse angle to acute angle
•  From obtuse angle to right angle
•  From acute angle to right angle

From acute angle to obtuse angle

Q5.  A glass plate is partly dipped vertically in the mercury and the angle of contact is measured. If the plate is inclined, then the angle of contact will

•  Increase
•  Remain unchanged
•  Increase or decrease
•   Decrease

Remain unchanged

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