Factors Affecting Pressure

Q.

A body floats or sinks due to the difference in their:

1. pressures

2. densities

3. mass

4. volume

Q.

A piece of the iron nail when kept horizontally on the surface of the sand rests on it. Why does it dig into the sand when kept vertically?

1. Due to more pressure, nail digs a hole

2. Due to less pressure, nail digs a hole

3. Due to gravity, nail digs a hole

4. Can't be said

Q. The pressure at the top of a well water is $P_1$, and at the depth of $h$ from the top is $P_2$. Given the density of water is $\rho$. Which of the following relation is correct?

1. $P_1>P_2$

2. $P_1=P_2$

3. $P_1-P_2=h\rho g$

4. $P_2-P_1=h\rho g$

Q.

Formula for pressure in liquids is

1. p = hPg, where h is height, P is density and g is gravity

2. p = Pg/h, where P is density, g is gravity and is height

3. p = hP/g, where h is height, P is density and g is gravity

4. p = hg/P, where h is height, g is gravity and P is density

Q.

Pressure increases with altitude.

1. True

2. False

Q.

Given that both liquid A and liquid B exert same amount of pressure, what would be height of column of liquid A if density of liquid A is twice density of liquid B and height of column of liquid B is 10 cm?

1. None of the above

2. 10 cm

3. 20 cm

4. 5 cm

Q.

Amount of pressure of liquid increases with

1. depth

2. volume

3. base area

4. mass

Q.

Pressure at a point in the liquid:

1. unequal in all directions

2. equal in all directions

3. greater in an upward direction

4. greater in a downward direction

Q.

What length of water column in a given tube has equivalent pressure to $0.86m$ of mercury column? The density of mercury is $13.6$ times the density of water.

1. $12.696m$

2. $11.696m$

3. $10.696m$

4. $11.423m$

Q.

3 similar vessels A, B, and C are filled with equal masses of 3 liquids of the same density and kept at 1m, 1.5m and 3 m above the ground respectively. Which will be at the highest pressure?

1. Pressure is equal in all vessels

2. Pressure is maximum in vessel A

3. Pressure is maximum in vessel B

4. Pressure is maximum in vessel C