What is a barometer? How is a simple barometer constructed?

Important Questions on Pressure in Fluids and Atmospheric Pressure

MEDIUM

9th ICSE

IMPORTANT

Concise Physics I.C.S.E Part I For Class 9>Chapter 4 - Pressure in Fluids and Atmospheric Pressure>EXERCISE–4(B)>Q 13

Explain how is the height of mercury column in the tube of a simple barometer, a measure of the atmospheric pressure?

MEDIUM

9th ICSE

IMPORTANT

Concise Physics I.C.S.E Part I For Class 9>Chapter 4 - Pressure in Fluids and Atmospheric Pressure>EXERCISE–4(B)>Q 15

Why is barometric height used as a unit to express the atmospheric pressure?

MEDIUM

9th ICSE

IMPORTANT

Concise Physics I.C.S.E Part I For Class 9>Chapter 4 - Pressure in Fluids and Atmospheric Pressure>EXERCISE–4(B)>Q 16

What is meant by the statement 'the atmospheric pressure at a place is $76 \text{cm of Hg}$'? State its value in $\text{Pa}$.

EASY

9th ICSE

IMPORTANT

Concise Physics I.C.S.E Part I For Class 9>Chapter 4 - Pressure in Fluids and Atmospheric Pressure>EXERCISE–4(B)>Q 17

How will you show that there is a vacuum above the surface of the mercury in a barometer? What name is given to this vacuum?

EASY

9th ICSE

IMPORTANT

Concise Physics I.C.S.E Part I For Class 9>Chapter 4 - Pressure in Fluids and Atmospheric Pressure>EXERCISE–4(B)>Q 18

How is the barometric height of a simple barometer affected if its tube is pushed down into the trough of mercury?

EASY

9th ICSE

IMPORTANT

Concise Physics I.C.S.E Part I For Class 9>Chapter 4 - Pressure in Fluids and Atmospheric Pressure>EXERCISE–4(B)>Q 18

How is the barometric height of a simple barometer affected if its tube is slightly tilted from vertical?

EASY

9th ICSE

IMPORTANT

Concise Physics I.C.S.E Part I For Class 9>Chapter 4 - Pressure in Fluids and Atmospheric Pressure>EXERCISE–4(B)>Q 18

How is the barometric height of a simple barometer affected if a drop of liquid is inserted inside the tube?

EASY

9th ICSE

IMPORTANT

Concise Physics I.C.S.E Part I For Class 9>Chapter 4 - Pressure in Fluids and Atmospheric Pressure>EXERCISE–4(B)>Q 19

State two uses of a barometer.