Pressure

Q.

What is Gas Pressure?

Q.

What causes Gas Pressure?

Q.

A gas exerts pressure on the walls of the container because

1. molecules of a gas are in random motion

2. molecules of a gas are massless

3. molecules of a gas are at rest

4. walls of the container are not strong

Q.

Calculate the pressure developed by a force of 50 N acting on an area of ${10m}^2$.

1. 10 Pa

2. 5 Pa

3. 15 Pa

4. 20 Pa

Q.

The factors on which the pressure exerted by a body depends

Q. Which of the following is NOT true about atmospheric pressure?

1. Atmospheric pressure is independent of the surface area of the body.
2. Atmospheric pressure increases with increase in altitude.
3. Atmospheric pressure is caused by the weight of air molecules surrounding the earth.
4. Atmospheric pressure decreases with increase in altitude.

Q. Which of the following is not a unit of pressure

1. Pascal
2. Atmosphere
3. Newton
4. Bar

Q.

The same amount of force is applied to two different objects with different surface areas. In this scenario, which of the following statements is correct?

1. None of the above

2. Surface area with maximum value will experience maximum force

3. Surface area with minimum value will experience maximum force

4. All surface areas will experience same force.

Q.

Which cube will experience more pressure?

1. A

2. B

3. Both will experience same pressure

4. None of these

Q.

A gas exerts pressure on the walls of the container because

1. gases do not exert pressure

2. pressure is exerted only when the walls of the container are weak

3. molecules present in gases always move in straight lines.

4. during their motion, they collide with one another and also with the walls of the container

Q.

The SI unit of _______ is pascal.

1. mass

2. energy

3. pressure

4. force

Q. As the depth increases, the pressure in a liquid will _____.

1. Increase
2. Decrease
3. Remain same
4. Become zero

Q.

A force of $5N$ is applied on a body over a surface area of 5 $m^2$. Calculate the pressure applied on the surface.

1. $2Pa$

2. $3Pa$

3. $5Pa$

4. $1Pa$

Q. What is the SI unit of pressure?

1. joule
2. newton
3. pascal
4. ampere

Q. John was given a task of putting up a notice on the notice board of his school. The process involved pinning the notice paper onto the board which was made of wood. He used the following as shown in the figure below. If he was pressing the pin from the broad end, he did not feel any pain on his thumb but when he tried the same thing from the other end; he felt a sharp prickly pain on his thumb. Why did this happen?

1. The pin was colder at the broader end
2. The pin was extremely hot at the pointed end
3. The pin has more surface area at the broader end
4. The pin had cushion like material at the broader end

Q. Among the three scubadivers, who would experience a higher liquid pressure than the others?

1. 
2. 
3. 

Q.

1 pascal pressure is equal to -

Q.

Assume a gas stored in a container at room temperature. Identify the physical effect(s) that is/are caused by the motion of the particles of the gas inside the container.

1. Potential Energy

2. Pressure

3. Electrical energy

4. Temperature

Q. A force of 200 N is applied to an area of $10m^2$. Compute pressure being applied on the area.

1. 2000 Pa
2. 20 Pa
3. 100 Pa
4. 10 Pa

Q.

IT staff members are under extreme pressure mainly because of ________.

1. strict Management
2. both A and B
3. none
4. tight deadlines

Q.

If a force of $40N$ is applied to a sponge of area $5m^2$, then the pressure exerted on the sponge will be $8Pa$.

1. True
2. False

Q. A container is filled with water as shown in the given figure. Which of the following statements is correct about the pressures at points A, B and C?

1. Pressure at A > Pressure at B > Pressure at C
2. Pressure at A = Pressure at B = Pressure at C
3. Pressure at A < Pressure at B > Pressure at C
4. Pressure at A < Pressure at B < Pressure at C

Q.

A thrust of 20N is acting on an area of 2$m^2$. How much pressure is acting on the surface?

Q.

Why do gases exert pressure ?

Q. Which among the following wear specially designed suits for tackling pressure?

1. Shopkeepers
2. Web developers
3. Doctors
4. Astronauts