SSC GD Constable 2021 · Question 316 of 377
The correct answer isBarometer. Key Points A barometer is a device that measures changes in air pressure above or below sea leve l as a function of altitude. In order for a barometer to function, the mercury weight inside the glass tube must be balanced with respect to the atmospheric pressure. The most popular kind of barometer for use at home is the aneroid. The aneroid cell volume is very sensitive to changes in atmospheric pressure as it expands and contracts as air pressure decreases or increases. Additional Information Ammeter: An ammeter is a measuring instrument which is used for the measurement of electric current in an electric circuit. Photometer: A device that measures light intensity or, more specifically, that compares the relative intensities of various lights , or their respective illuminating powers. Bolometer : A bolometer is a device that uses a substance with a temperaturedependent electrical resistance to measure radiant heat.
Source: SSC GD Constable 2021 Prev. Year Paper (2021-12-02 Shift 3) English — Prepp (with solutions) · reliable-secondary
Practice the full SSC GD Constable 2021 paper
Timed test with all 377 questions, just like the real exam.
Start test