PHY 103 EXAM CBT TEST

Ace/Undergragra March 6, 2023

4 3,501 1 minute read

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Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace PHY 103 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions
Do not waste time on a question you don’t know
Move as fast as possible and starting with questions that don’t have calculation first to save time
Always crosscheck
Don’t be in a hurry to submit, you are not in a competition
Don’t be scared. Getting an A is easy
Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book
Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

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Created on January 06, 2023 By

Ace/Undergragra

PHY 103

1 / 40

1. What is the dimension of strain

A. M/L

B. L x L

C. M X L X T

D. It's dimensionless

2 / 40

2. Which of the following affects surface tension

A. Pressure

B. Type of force

C. Impurity

D. Thermodynamics

3 / 40

3. _______ materials can easily be broken or cracked

A. Brittle

B. Compressible

C. Malleable

D. Ductile

4 / 40

4. ________ Law states that provided the elastic limit of an elastic material is not exceeded, the force applied is directly proportional to the extension

A. String law

B. Hooke’s law

C. Charles law

D. Law of extension

5 / 40

5. A deuterium nuclei fusion reaction will occur provided that the nuclei possesses an average kinetic energy of at least 0.72Mev what is the temperature required for nuclear fusion to take place in the deuterium?

A. 0.772 x 10^7

B. 2.17 x 10^47

C. 2.07 x 10^-23

D. 3 x 10^8

6 / 40

6. A uniform cylindrical wooden block floats in water with 1/3 of its height above the water level. In a liquid of a relative density 0.8, what fraction of its height will be above the liquid

A. 1/6v

B. 1/4v

C. 1/7v

D. 1/3v

7 / 40

7. Pyrometer is best used to measure

A. Room temperature

B. Low temperatures

C. Very low temperatures

D. High temperature

8 / 40

8. Which of the laws of thermodynamics defines entropy

A. First

B. Third

C. Second

D. Zeroth

9 / 40

Which thermometer adopts pressure as its thermometric property?

A. Constant volume gas thermometer

B. Thermocouple

C. Alcohol in gas Thermometer

D. Electric Resistance

10 / 40

10. Bulk Modulus, Pressure, Force, Stress – Which one of these won't have the same unit as the others?

A. Bulk Modulus

B. Force

C. Pressure

D. Stress

11 / 40

11. An object has a mass of 10kg and a length of 4m, given that the cross-sectional area of the object is 32.5m^2, Now calculate the density of the object

A. 7.077kg/m^3

B. 0.0077kg/m^3

C. 0.077kg/m^3

D. 0.77kg/m^3

12 / 40

12.

A cubic tank is completely filled with water. What will be the ratio of the hydrostatic force exerted on the base and on any one of the vertical sides?

A. 2:1

B. 1:1

C. 1:2

D. 3:2

13 / 40

13. ________ is the evidence that matter is made up of atoms and particles that are in constant vibration

A. Accelerated motion

B. Bernuolli principle

C. Brownian motion

D. Special relativity

14 / 40

14. A body weighs 0.3N in air, 0.25N when fully immersed in water and 0.27N when fully immersed in a liquid. Calculate its loss of weight in water

A. 0.05N

B. 0.6N

C. 0.003N

D. 1.3N

15 / 40

15. Water strider can walk walk on water because

A. The Viscosity of the water is High

B. It's weight is not enough to penetrate the surface

C. It is not true,

D. The surface tension of water strider is High

16 / 40

16. Gas molecules obeys Newton law

A. None

B. False

C. True

D. All

17 / 40

17. Which of the following is not a basic type of stress

A. Shear stress

B. Volumetric stress

C. Tensile stress

D. Compressive stress

18 / 40

18. A hydraulic press contains 0.25m^3 of oil find the decrease in the volume of the oil when it's subjected to a pressure increase (P' - P) = 1.6 x 10 ^7 Pa. The bulk Modulus of the oil is 5.0GigaPa

A. 0.00008

B. 0.0008

C. 0.008

D. 0.6796

19 / 40

19. _______ is the part of the universe, we choose to study

A. Surrounding

B. System

C. Thermodynamic cycle

D. Isolated System

20 / 40

20.

The equation for the average kinetic energy is_________

A. 3.5KT

B. 3.2KT

C. 1.5KT

D. 0.5KT

21 / 40

21. Which of the laws of thermodynamics defines entropy

A. Zeroth

B. Third

C. First

D. Second

22 / 40

22. For an isolated system

A. The Thermometer is always stagnant

B. Entropy

C. There is no acceleration

D. Neither the mass nor energy can transfer between the system and the surrounding

23 / 40

23. __________ is a pointer for the direction of energy transfer.

A. Temperature

B. Thermocouple

C. Weight

D. Thermodynamics

24 / 40

24. Compressible flow is a flow that deals with ______

A. Fluid density

B. Fluid geometry

C. Fluid pressure

D. Fluid temperature

25 / 40

25. __________ is the condition of a system at an instant of time.

A. Process

B. Thermocycle

C. System

D. State

26 / 40

26. First law of thermodynamics deals with

A. Conservation of pressure

B. Conservation of energy

C. Conservation of mass

D. Conservation of momentum

27 / 40

27. Which of the following is true?

A. Flow is laminar inside the boundary layer and turbulent outside

B. Flow is laminar both inside and outside of the boundary layer

C. Flow is turbulent both inside and outside of the boundary layer

D. Flow is turbulent inside the boundary layer and laminar outside

28 / 40

28. The scale of 212°F in °C is ___

A. 100°C

B. 88°C

C. 89°C

D. 68.90°C

29 / 40

29. Mercury melts at ________

A. 0° - 4°C

B. 404°C

C. -38.829°C

D. 112°C

30 / 40

30. Which among the following is the formula for Gibbs free energy?

A. H - T

B. H-T∆S

C. H - T

D. T∆S

31 / 40

31. The pressure at any given point of a non-moving fluid is called the ____________

A. Differential Pressure

B. Guage Pressure

C. Atmospheric Pressure

D. Hydrostatic Pressure

32 / 40

32.

Which of the following is not a scale used in measuring temperature?

A. Temperature

B. None of the above

C. Centigrade

D. Fahrenheit

33 / 40

33. Which of the following is not a scale used in measuring temperature?

A. Fahrenheit

B. Temperature

C. None

D. Centigrade

34 / 40

34. Which among the following is an assumption of Hagen-Poiseuille equation?

A. Fluid is laminar

B. Fluid is compressible

C. Fluid is turbulent

D. Fluid is uniform

35 / 40

35. A student using a circular loop of wire and a pan of soapy water produces a bubble whose radius is 1mm. The surface tension of the soapy water is [a= 0.025N/m] determine the pressure difference between the inside and outside of the pan.

A. 100N/m

B. 100N/m^2

C. 100N/m

D. 1000N/m^2

36 / 40

36. For an isolated system

A. There is no acceleration

B. The Thermometer is always stagnant

C. Neither the mass nor energy can transfer between the system and the surrounding

D. Entropy

37 / 40

37. __________ is a pointer for the direction of energy transfer.

A. Weight

B. Temperature

C. Thermodynamics

D. Thermocouple

38 / 40

38.

A body weighs 0.3N in air, 0.25N when fully immersed in water and 0.27N when fully immersed in a liquid. Calculate its loss of weight in water

A. 0.05N

B. 1.3N

C. 0.6N

D. 0.003N

39 / 40

39. Hooke's law is applicable within what limit?

A. Elastic limit

B. Fracture limit

C. Ultimate strength

D. Plastic limit

40 / 40

40. The SI unit of Surface tension is ______

A. N/m

B. Pa

C. Nm

D. Kg/cm

Your score is

The average score is 46%

Please do well to drop a comment if this has really helped you. Thanks❤️

Ace/Undergragra March 6, 2023

4 3,501 1 minute read

3.3 3 votes

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4 Comments

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Face cap boy

2 months ago

It’s okay, very helpful.
But the scoring is a bit off,
Website is unstable, too much advertisement.

Author

Reply to Face cap boy

The scoring is a bit off? Do you mind explaining?
Sorry about the pop up ads ,I’ll work on reducing it .

Dey play

Is there any guarantee that these cbt will show in the exams especially phy103

Reply to Dey play

I really can’t say.
These questions are practice questions not expo.
Please try as much as possible to read your books thoroughly.

Masaud salihu Mohammed
I like start payment my school fees...
Chioma Goodness Ekpo
Thanks, it's really helpful...
Ace/Undergragra
Thanks for stopping by....
Ace/Undergragra
Thank you for noticing. Please do you minding taking a scree...
Alice
GREAT WORK BIG BOSS...

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