Bernoulli's Principle

Q.

Bernoulli's principle is being used in designing the aerodynamic structure of aeroplanes.

1. True

2. False

Q. According to Bernoulli principle, air pressure decreases with increase in ________ of air.

1. speed
2. mass
3. height
4. temperature

Q.

A pressure cooker works based on Bernoulli's Principle.

1. True

2. False

Q. Sheets, tiles etc fixed on the roofs of buildings rise up when strong wind blow outside. Why does this happen?

Q.

Give reason: A bird or an airplane can fly in air.

Q.

Select a few examples that illustrate Bernoulli's principle.

1. Sailing

2. Airflight

3. Syringe

4. Straw

Q.

Consider a child playing with a soft straw. As he tries to suck air into his mouth, the pipe automatically deforms and the flow of air gets choked. This phenomena can be explained by Bernoulli's Principle.

1. True

2. False

Q.

List the factors on which pressure applied by a fluid depends?

Q. Which of the following principle shows that if you increase air speed its pressure will decrease?

1. Darwin principle
2. Einstein principle
3. Bernoulli's principle
4. Bohr principle

Q.

I still have a doubt in classification of why do we need meteorologists while writing answer in 80 to 100 words.

Q. For a horizontally flowing air current, if the speed at point A is lower than point B, then the pressure at point A will be than point B.

1. higher than
2. lower than
3. equal to

Q. Bernoulli’s principle holds valid for these substances, except for:

1. Air
2. Petrol
3. Sand
4. Oxygen

Q.

When any vehicle moves very fast, low pressure is created along its top.

1. low pressure

2. high pressure

Q.

Bernoulli's principle holds good for:

1. Air

2. Petrol

3. Sand

4. Oxygen

Q.

Which of the following options is correct?

1. Atmospheric pressure increases with increase in altitude

2. Atmospheric pressure remains constant with increase or decrease in altitude

3. Atmospheric pressure decreases with increase in altitude

4. The Earth is at rest with respect to the Sun.

Q.

There is a fluid flowing in a pipeline. A situation arrives where we are required to reduce the pressure in the pipe to prevent it from bursting. It can be done by increasing the velocity of flow.

1. True

2. False