
The fluid used in an android barometer is?
(A) Water
(B) Mercury
(C) Air
(D) Alcohol
Answer
124.2k+ views
Hint: Aneroid barometer is also used to measure air pressure . It does not use any liquid instead it uses air as a mechanism to measure the atmospheric pressure.
Complete step by step solution: Barometer was designed to measure atmospheric pressure. The barometer has two major categories – mercury barometer and aneroid barometer . While in the former we make use of the mercury column to measure the pressure , no liquid is used in an aneroid barometer. In fact, its whole construction and working is different from the mercury barometer.

This is how an aneroid barometer looks. We will take a metal box that is partially evacuated( air is taken out of it). Now the pressure inside the metal box is low . The pressure outside the box will be more in comparison so the air from outside will towards the metal box and will exert pressure on the metal box. The force ( from air pressure) will make the box contract and lever will move . Any movement in lever will cause the pointer to move and we will get the reading . If the pressure outside is small it will make the box gain its size. Air ,here, works as a fluid during the whole process.
So we can say that the fluid used in an android barometer is air.
Hence, the correct option is C.
Note: The word aneroid means dry or we can say devoid of any moisture and hence liquid particles. It is named after this only. Unlike mercury barometers, it makes use of the air.
Complete step by step solution: Barometer was designed to measure atmospheric pressure. The barometer has two major categories – mercury barometer and aneroid barometer . While in the former we make use of the mercury column to measure the pressure , no liquid is used in an aneroid barometer. In fact, its whole construction and working is different from the mercury barometer.

This is how an aneroid barometer looks. We will take a metal box that is partially evacuated( air is taken out of it). Now the pressure inside the metal box is low . The pressure outside the box will be more in comparison so the air from outside will towards the metal box and will exert pressure on the metal box. The force ( from air pressure) will make the box contract and lever will move . Any movement in lever will cause the pointer to move and we will get the reading . If the pressure outside is small it will make the box gain its size. Air ,here, works as a fluid during the whole process.
So we can say that the fluid used in an android barometer is air.
Hence, the correct option is C.
Note: The word aneroid means dry or we can say devoid of any moisture and hence liquid particles. It is named after this only. Unlike mercury barometers, it makes use of the air.
Recently Updated Pages
Difference Between Circuit Switching and Packet Switching

Difference Between Mass and Weight

JEE Main Participating Colleges 2024 - A Complete List of Top Colleges

JEE Main Maths Paper Pattern 2025 – Marking, Sections & Tips

Sign up for JEE Main 2025 Live Classes - Vedantu

JEE Main 2025 Helpline Numbers - Center Contact, Phone Number, Address

Trending doubts
JEE Main 2025 Session 2: Application Form (Out), Exam Dates (Released), Eligibility & More

Class 11 JEE Main Physics Mock Test 2025

JEE Main Exam Marking Scheme: Detailed Breakdown of Marks and Negative Marking

JEE Main 2023 January 24 Shift 2 Question Paper with Answer Keys & Solutions

Learn About Angle Of Deviation In Prism: JEE Main Physics 2025

JEE Main 2025: Conversion of Galvanometer Into Ammeter And Voltmeter in Physics

Other Pages
JEE Advanced Marks vs Ranks 2025: Understanding Category-wise Qualifying Marks and Previous Year Cut-offs

NCERT Solutions for Class 11 Physics Chapter 1 Units and Measurements

NCERT Solutions for Class 11 Physics Chapter 9 Mechanical Properties of Fluids

Units and Measurements Class 11 Notes: CBSE Physics Chapter 1

NCERT Solutions for Class 11 Physics Chapter 2 Motion In A Straight Line

NCERT Solutions for Class 11 Physics Chapter 7 Gravitation
