Atmospheric Pressure

Q.

What is barometric pressure in physics?

Q. Which of the following statements is/are correct regarding atmospheric pressure?

1. The average atmospheric pressure at the sea level is around 1, 013.2 millibars.
2. Atmospheric pressure is uniform across the globe.
3. Atmospheric pressure is measured with the help of an instrument called a barometer.
4. Atmospheric pressure doesn't have any role in case of weather phenomenon.

Q. Which instrument measures atmospheric pressure?

1. Maximum minimum thermometer
2. Eudiometer
3. Aneroid barometer
4. Densimeter

Q.

What is the principle behind working of a mercury barometer?

Q.

The instrument used to measure atmospheric pressure_______.

Q.

What is the SI unit of atmospheric pressure?

Q. Which of the following statements is/are correct?

1. A high- pressure region is formed over a place experiencing high temperature.
2. Air moves from a high-pressure region to a low-pressure region.
3. A low-pressure region is formed over a place experiencing low temperature.
4. Atmospheric pressure decreases with increase in altitude.

Q. Which instrument is used to measure Earth's atmospheric pressure?

1. Barometer
2. Gaugemeter
3. Pressure meter
4. Micrometer

Q. Which instrument is used to measure Earth's atmospheric pressure?

1. Barometer
2. Pressure meter
3. Gaugemeter
4. Micrometer

Q. The magnitude of average atmospheric pressure on the surface of the earth is:

1. 0.1 bar
2. 1 bar
3. 100 bar
4. 10 bar

Q.

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:

1. less than A

2. more than A

3. same as A

4. none of the above

Q. State whether true or false:

1. True
2. False

Q. Which device is used to measure wind speed?

1. Wind vane
2. Barometer
3. Wind gauge
4. Anemometer

Q. What should be the level of mercury at normal atmospheric pressure?

1. 76 cm
2. 77 cm
3. 75 cm
4. 80 cm

Q.

At a given place the barometer reads 72 cm and the weather is fair for two days, this implies that the given place is

1. at sea level

2. on some hill

3. below the sea level

4. none of the above

Q.

Pressure of a gas is measured using a barometer.

1. True
2. False

Q. What should be the level of mercury at normal atmospheric pressure?

1. 76 cm
2. 75 cm
3. 77 cm
4. 80 cm