Two liquids A and B were taken in two diffrernt barometer, the density of A is greater than that of B. Which liquid is preferable to be used as barometric liquid if the variation in pressure is every minute and why?

Two liquids A and B were taken in two diffrernt barometer, the density

1.	Two liquids A and B were taken in two diffrernt barometer, the density of A is greater than that of B. Which liquid is preferable to be used as barometric liquid if the variation in pressure is every minute and why?
Answer» Solution :(i) Relation between DENSITY of LIQUID, PRESSURE variation and height of the column. (ii) Relation between the density of the barometirc liquid and height of the column of the liquid. (III) Effect on the height of the column of the liquid due to the change in external pressure. (IV) Comparison of the change in heights of column of liquid A and that of B with a minute change in external pressure.