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Home » Physics MCQs (Multiple Choice Questions) – Part #1

Physics MCQs (Multiple Choice Questions) – Part #1

This is the Part #1 of our Physiscs MCQs section. As the first and second part there are 40 questions for you to answer. And don’t forget to check if your answers are correct once at the end of the page.

1.The unit of measurement of pressure is,

  1. Kg m-3
  2. ms-2
  3. m2
  4. Nm-2

2. Which one of the following can not be taken as an example for a couple of forces?

  1. Moving bus
  2. Turning a door key
  3. Turning a water tap
  4. See-saw

3. Select the correct statement

  1. Shiny surfaces reflect more heat
  2. Dark surfaces radiate less heat
  3. Shiny surfaces absorb more heat
  4. Dark surfaces absorb less heat

4. The bicycle handle works according to,

  1. Levers
  2. Inclined plane
  3. Wheel and Axle
  4. Pulley systems

5. Which one of the following arrangements show the symbol of units for potential difference, electric current and resistance in the correct order?

  1. W, V, Ω
  2. V, A, Ω
  3. W, A, Ω
  4. J, A, V

6. Convection currents heat up,

  1. Gases and Solids
  2. Solids, Liquids and Gases
  3. Solids and Liquids
  4. Liquids and Gases

7. Which one of the following is a second class lever?

  1. Pliers
  2. See saw
  3. Wheel barrow
  4. Pair of scissors

8. Potential differences is measured in,

  1. Amperes
  2. Watts
  3. Volts
  4. Columbus

9. A capacitor is a device,

  1. That enlarge a current
  2. That allows only a direct currents to pass through
  3. That emits a light when a current passes through
  4. That stores charges temporarily

10. The gradient of the graph of a motion done with uniform velocity is always,

  1. A plus value
  2. Zero value
  3. One of the above three
  4. A minus value

11. A factor that affects the amount of kinetic energy in an object is,

  1. The tension of the object
  2. The velocity at which it makes movement
  3. The height which it’s placed
  4. The amount of stress it experiences

12. What is false about frictional force?

  1. Frictional force increases with the weight of an object
  2. More energy is wasted with increase in friction
  3. Rough surfaces exert more frictional force
  4. Frictional force increases with increase in surface area

13. When a brick is kept with different surfaces of it touching the floor the pressure exerted is different because,

  1. The surface area differs each time
  2. The weight differs each time
  3. The volume differs each time
  4. The mass differs each time

14. Which one of the following does not belong to wheel and axle?

  1. Coconut scraper
  2. Bicycle handle
  3. Screw driver
  4. Pulley system

15. A knife is sharpened to,

  1. Increase the width of the surface
  2. Increase pressure
  3. Increase the surface area
  4. Increase the cutting surface

16. Energy can be stored in different ways. An equipment in which energy can be stored in the form of electricity is,

  1. Accumulator
  2. Capacitor
  3. Electric bell
  4. Dynamo

17. The momentum of an object at any time is the multiple of,

  1. Force & Acceleration of the object
  2. Its mass & its velocity
  3. Force & the distance it has moved
  4. Its mass & Acceleration

18. The force that should be applied on an object of mass 125kg to reach an acceleration of 5ms-1 is

  1. 625 N
  2. 25 N
  3. 125 N
  4. 130 N

19. A transistor can be used to,

  1. Change the resistance in an electric circuit
  2. Amplify an electric signal
  3. Convert an alternate current to a direct current
  4. Store charges for amplification of current

20. The SI unit for measuring of potential difference is,

  1. Watt
  2. Ampere
  3. Ohm
  4. Volt

21. The color bands of a resister are red, yellow and green. Their values are Red = 2, Yellow = 4, Green = 5, The value of the resistor is,

  1. 542 Ω
  2. 245 Ω
  3. 5420 Ω
  4. 2400000 Ω

22. An object of mass 0.5kg is moving at a velocity of 4ms-1. What is the kinetic energy it possesses?

  1. 2 J
  2. 4 J
  3. 40 J
  4. 20 J

23. Which 2 colors of light when mixed will give peacock blue?

  1. Red and blue
  2. Purple and blue
  3. Green and blue
  4. Red, green and blue

24. The pitch of a sound wave depends on,

  1. Loudness
  2. Frequency
  3. Waveform
  4. Amplitude

25. Physical nature of a substances affect the rate of reaction because it,

  1. Increases the temperature of reactants
  2. Increases the kinetic energy of reactants
  3. Increases concentration
  4. Increases surface area of contact

26. Which one of the following experiences 2 forces that are not in equilibrium?

  1. A bus in motion
  2. A child seated on a wing
  3. A bag of books on a table
  4. A fruit on a tree

27. The scientist who first found out the relation ship between potential differences and electric current in an electrical conductor through which a current is passing was,

  1. Faraday
  2. Newton
  3. Ohm
  4. Ampere

28. What is the wrong statement about electrical resistance?

  1. Resistance differs according to different types of elements
  2. Resistance increases with increase in cross section of conductor
  3. Resistance increases with a decrease in cross section of conductor
  4. Resistance increases with increases in length of conductor

29. Select the wrong statement about liquid pressure,

  1. At different depths of a liquid the pressure is different
  2. Liquid pressure acts in all directions in a liquid
  3. Pressure of equal levels of the same liquid the same
  4. The liquid pressure at equal levels of different liquids is the same

30. In electroplating a surface with another metal to get a smooth even plating, a factor to be considered is,

  1. To have a plastic covering over the object to be plated
  2. To keep on changing the temperature of the electrolyte
  3. To maintain a small current through out the process
  4. To see that the object is always connected to the anode

31. A diode is used in a circuit to,

  1. Store electrical energy
  2. Rectify a current
  3. Amplify a current
  4. Change the resistance

32. There is stored potential energy in,

  1. The water flowing in a river
  2. The leaves of a tree that is swaying in the wind
  3. The wind that flows a cross a desert
  4. The water that is pumped in to a tank on a roof top

33. Into which of the following places will a convex mirror fit in best?

  1. As a shaving mirror
  2. In constructing a periscope
  3. As a reflector of a vehicle lamp
  4. As a driving mirror in a vehicle

34. A pond appears to be 3m deep, If the refractive index of water is 4/3, what can be the real depth of the pond?

  1. 3m
  2. 4m
  3. 1.33m
  4. 12m

35. The scientist who found the direction of flow of the induced current is such that it opposes the change producing it, was,

  1. Faraday
  2. Lenz
  3. Fleming
  4. Newton

36. When the same note is played by a violin and a flute separately a person who listens to it can identify the difference. The characteristic of sound that helps to identify this difference is,

  1. The loudness of the sound
  2. The amplitude of the sound
  3. The pitch of a sound
  4. The quality of the sound

37. A student revealed that even after breaking away one of the terminals of an accessory used in electronic circuits a current could be passed only in one direction, across the remaining two terminals through the accessory. This accessory could be,

  1. A light sensitive diode
  2. A capacitor
  3. A resistor
  4. A transistor

38. The phenomenon that agrees most with Newton’s Third law is,

  1. Reaching of maximum velocity of a coconut that falls from above as it is about to touch the ground
  2. The change in the direction of motion of a moving body
  3. Re-bouncing of a ball that strikes on the floor, after falling from above
  4. The rolling down of a stone, that is at the top of a mountain

39. Several attempts made to pull out a van that is sunk in the mud, with the wheels rotating but without the van moving, failed. Later when several persons were loaded into the van, it because possible to pull the van out of the mud,

  1. The coefficient of friction increases with the increase in weight of the vehicle
  2. The force of friction increases with the increase in weight of the vehicle
  3. The coefficient of friction decreases with the increase in weight of the vehicle
  4. The force of friction decreases with the increase in weight of the vehicle

40. What principle out of those given below is used in the photocopying machine?

  1. Transference of heat
  2. Electrolysis
  3. Electrodynamics
  4. Electrostatic charges