Physics Chapter Fluid Dynamics Mcqs

#1
The SI unit of pressure is:

A) pascal

B) newton

C) watt

D) joule

Answer: A

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#2
Pressure is defined as:

A) force per unit area

B) density times velocity

C) force times area

D) area per unit force

Answer: A

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#3
If force is applied over a large area, pressure:

A) decreases

B) increases

C) remains the same

D) varies with velocity

Answer: A

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#4
A force of 10 N is applied on an area of 5 cm². What is the pressure?

A) $2\ \text{Pa}$

B) $500\ \text{Pa}$

C) $0.5\ \text{Pa}$

D) $10\ \text{Pa}$

Answer: B

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#5
For an ideal fluid, the equation of continuity is:

A) $A_1v_1=A_2v_2$

B) $v_1=v_2$

C) $F_1A_1=F_2A_2$

D) $P_1v_1=P_2v_2$

Answer: A

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#6
Bernoulli’s equation is derived from:

A) conservation of mechanical energy

B) conservation of momentum

C) Newton's second law

D) Newton's third law

Answer: A

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#7
In a fluid flowing through a pipe, the pressure is highest:

A) where the speed is lowest

B) where the speed is highest

C) in the middle of the pipe

D) at the entrance of the pipe

Answer: A

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#8
According to Pascal's law:

A) pressure exerted on a confined fluid is transmitted equally in all directions

B) pressure increases with depth

C) fluid velocity remains constant

D) force equals area

Answer: A

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Physics

#1 The SI unit of pressure is:

A) pascal B) newton C) watt D) joule

Comments:

#2 Pressure is defined as:

A) force per unit area B) density times velocity C) force times area D) area per unit force

Comments:

#3 If force is applied over a large area, pressure:

A) decreases B) increases C) remains the same D) varies with velocity

Comments:

#4 A force of 10 N is applied on an area of 5 cm². What is the pressure?

A) $2\ \text{Pa}$ B) $500\ \text{Pa}$ C) $0.5\ \text{Pa}$ D) $10\ \text{Pa}$

Comments:

#5 For an ideal fluid, the equation of continuity is:

A) $A_1v_1=A_2v_2$ B) $v_1=v_2$ C) $F_1A_1=F_2A_2$ D) $P_1v_1=P_2v_2$

Comments:

#6 Bernoulli’s equation is derived from:

A) conservation of mechanical energy B) conservation of momentum C) Newton's second law D) Newton's third law

Comments:

#7 In a fluid flowing through a pipe, the pressure is highest:

A) where the speed is lowest B) where the speed is highest C) in the middle of the pipe D) at the entrance of the pipe

Comments:

#8 According to Pascal's law:

A) pressure exerted on a confined fluid is transmitted equally in all directions B) pressure increases with depth C) fluid velocity remains constant D) force equals area

Comments:

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#1
The SI unit of pressure is:

A) pascal

B) newton

C) watt

D) joule

#2
Pressure is defined as:

A) force per unit area

B) density times velocity

C) force times area

D) area per unit force

#3
If force is applied over a large area, pressure:

A) decreases

B) increases

C) remains the same

D) varies with velocity

#4
A force of 10 N is applied on an area of 5 cm². What is the pressure?

A) $2\ \text{Pa}$

B) $500\ \text{Pa}$

C) $0.5\ \text{Pa}$

D) $10\ \text{Pa}$

#5
For an ideal fluid, the equation of continuity is:

A) $A_1v_1=A_2v_2$

B) $v_1=v_2$

C) $F_1A_1=F_2A_2$

D) $P_1v_1=P_2v_2$

#6
Bernoulli’s equation is derived from:

A) conservation of mechanical energy

B) conservation of momentum

C) Newton's second law

D) Newton's third law

#7
In a fluid flowing through a pipe, the pressure is highest:

A) where the speed is lowest

B) where the speed is highest

C) in the middle of the pipe

D) at the entrance of the pipe

#8
According to Pascal's law:

A) pressure exerted on a confined fluid is transmitted equally in all directions

B) pressure increases with depth

C) fluid velocity remains constant

D) force equals area