Question

At a given place, two barometer tubes A and B were used to set up mercury barometer, such that tube A has uniform bore and tube B has bore of varying diameter. The barometric pressure registered by tube B will be:

• A. less than A
• B. more than A
• C. same as A
• D. none of the above

Answer 1

The correct option is C

same as A

Explanation of correct option:

option (c)

1. The atmospheric pressure at a place is measured by a barometer.
2. Barometer is designed by Italian scientist Torricelli.
3. In the observation of measuring atmospheric pressure it is found that:

a) The vertical height of mercury in the tube is independent of the shape or size of the tube.

b) It does not change if the tube is tilted.

Thus, option (c) same as A is the correct option.