Concepts Of Physics MCQ Edition [Volume 1]PhysicsSome Mechanical Properties of Matter
Water ascends to a length of 10 cm in a vertical capillary tube. If the tube is inclined at 45^ , the length of water risen in the tube will be
Options
- A20 cm
- B10 2 cm
- C10 2 cm
- D10 cm
Correct answer
B. 10 2 cm
Step-by-step solution
The vertical height of water in the capillary tube is h = 10 cm . When the capillary tube is inclined at an angle with the vertical, the vertical height of the liquid column remains constant. Let l be the length of the liquid column in the inclined tube. From the geometry of the setup, h = l . Given = 45^ and h = 10 cm . 10 = l 45^ 10 = l ( 1 2 ) l = 10 2 cm