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Question
A simple barometer was first constructed by _______.
Solution
A simple barometer was first constructed by Torricelli.
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RELATED QUESTIONS
Match the following.
| Barometer | reduce friction |
| Increasing area of contact | Atmospheric pressure |
| Decreasing area of contact | cause of friction |
| Lubricants | increases friction |
| Irregular surface | decreases friction |
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Describe the construction and working of mercury barometer.
Higher Order Thinking Skill.
How high does the mercury barometer stand on a day when atmospheric pressure is 98.6 kPa?
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Let 'R1' and 'R2' are radii of two mercury drops. A big mercury drop is formed from them under isothermal conditions. The radius of the resultant drop is ______.
______ is the instrument used to measure atmospheric pressure.
______ is a device for measuring atmospheric pressure without the use of liquids.
The barometer works by balancing the Mercury in the glass tube along with the outside air pressure.
Match the following.
| Column I | Column II |
| a) Barometer | i) reduce friction |
| b) Increasing area of contact | ii) Atmospheric pressure |
| c) Decreasing area of contact | iii) cause of friction |
| d) Lubricants | iv) increases friction |
| e) Irregular surface | v) decreases friction |
