A set of Physics CEE-1

Posted by Nepal Quiz

الجمعة، 27 ديسمبر 2024

_Physics

 A set of Physics CEE-1

1. A car accelerates uniformly from rest at 2 m/s². What will be its velocity after 5 seconds?
   a) 5 m/s
   b) 10 m/s
   c) 15 m/s
   d) 20 m/s
   Answer: b) 10 m/s

2. A body is thrown vertically upward with a velocity of 20 m/s. How long will it take to reach the highest point?
   a) 2 seconds
   b) 4 seconds
   c) 10 seconds
   d) 20 seconds
   Answer: a) 2 seconds

3. What is the value of acceleration due to gravity (g) at the surface of the Earth?
   a) 8.9 m/s²
   b) 9.8 m/s²
   c) 10.5 m/s²
   d) 11.2 m/s²
   Answer: b) 9.8 m/s²

4. A force of 10 N is applied to a body of mass 2 kg. What is the acceleration produced?
   a) 2 m/s²
   b) 5 m/s²
   c) 10 m/s²
   d) 20 m/s²
   Answer: b) 5 m/s²

5. A body of mass 5 kg is dropped from a height of 20 m. What will be its velocity just before hitting the ground?
   a) 10 m/s
   b) 14 m/s
   c) 20 m/s
   d) 25 m/s
   Answer: c) 20 m/s

6. The work done by a force of 50 N acting over a distance of 2 m is:
   a) 25 J
   b) 50 J
   c) 100 J
   d) 200 J
   Answer: c) 100 J

7. If a body of mass 10 kg is raised to a height of 5 m, what is the potential energy gained? (Take g = 10 m/s²)
   a) 250 J
   b) 500 J
   c) 750 J
   d) 1000 J
   Answer: b) 500 J

8. The SI unit of power is:
   a) Joule
   b) Watt
   c) Newton
   d) Pascal
   Answer: b) Watt

9. What is the kinetic energy of a body of mass 4 kg moving at a velocity of 3 m/s?
   a) 9 J
   b) 12 J
   c) 18 J
   d) 36 J
   Answer: d) 36 J

10. A machine does 500 J of work in 10 seconds. What is its power?
    a) 50 W
    b) 100 W
    c) 200 W
    d) 500 W
    Answer: a) 50 W

11. The SI unit of temperature is:
    a) Celsius
    b) Kelvin
    c) Fahrenheit
    d) Joule
    Answer: b) Kelvin

12. The process in which heat is transferred by the bulk movement of fluid is called:
    a) Conduction
    b) Convection
    c) Radiation
    d) Sublimation
    Answer: b) Convection

13. Which law states that energy cannot be created or destroyed?
    a) Zeroth law of thermodynamics
    b) First law of thermodynamics
    c) Second law of thermodynamics
    d) Third law of thermodynamics
    Answer: b) First law of thermodynamics

14. Which type of heat transfer does not require a medium?
    a) Conduction
    b) Convection
    c) Radiation
    d) None of the above
    Answer: c) Radiation

15. What is the specific heat capacity of water?
    a) 4186 J/kg·K
    b) 2100 J/kg·K
    c) 273 J/kg·K
    d) 10 J/kg·K
    Answer: a) 4186 J/kg·K

16. The SI unit of electric charge is:
    a) Volt
    b) Ampere
    c) Coulomb
    d) Ohm
    Answer: c) Coulomb

17. If the resistance in a circuit is 10 Ω and the current is 2 A, what is the voltage across the resistor?
    a) 5 V
    b) 10 V
    c) 20 V
    d) 40 V
    Answer: c) 20 V

18. The instrument used to measure current is:
    a) Voltmeter
    b) Ammeter
    c) Galvanometer
    d) Ohmmeter
    Answer: b) Ammeter

19. What is the resistance of a 100 W bulb operating at 220 V?
    a) 44 Ω
    b) 220 Ω
    c) 484 Ω
    d) 2200 Ω
    Answer: c) 484 Ω

20. The magnetic field inside a long straight solenoid is:
    a) Circular
    b) Uniform
    c) Zero
    d) Non-uniform
    Answer: b) Uniform

21. The speed of sound in air at 20°C is approximately:
    a) 300 m/s
    b) 343 m/s
    c) 400 m/s
    d) 500 m/s
    Answer: b) 343 m/s

22. Light travels fastest in:
    a) Air
    b) Glass
    c) Water
    d) Vacuum
    Answer: d) Vacuum

23. The unit of frequency is:
    a) Hertz
    b) Joule
    c) Meter
    d) Second
    Answer: a) Hertz

24. Which phenomenon proves the wave nature of light?
    a) Reflection
    b) Refraction
    c) Diffraction
    d) Photoelectric effect
    Answer: c) Diffraction

25. The power of a convex lens is +2 D. Its focal length is:
    a) 0.5 m
    b) 1 m
    c) 2 m
    d) 5 m
    Answer: b) 1 m

26. The dimensional formula of pressure is:
    a) [MLT⁻²]
    b) [ML⁻¹T⁻²]
    c) [MLT²]
    d) [ML⁻²T²]
    Answer: b) [ML⁻¹T⁻²]

27. The escape velocity of Earth is approximately:
    a) 7 km/s
    b) 11.2 km/s
    c) 15 km/s
    d) 20 km/s
    Answer: b) 11.2 km/s

28. Which color of light has the shortest wavelength?
    a) Red
    b) Green
    c) Blue
    d) Violet
    Answer: d) Violet

29. One light-year is approximately equal to:
    a) $9.46 × 10^{12}$ km
    b) $1.50 × 10^8$ km
    c) $3.00 × 10^5$ km
    d) $7.12 × 10^{10}$ km
    Answer: a) $9.46 × 10^{12}$ km

30. When two waves meet in such a way that their amplitudes are added, the phenomenon is called:
    a) Interference
    b) Diffraction
    c) Constructive interference
    d) Destructive interference
    Answer: c) Constructive interference

31. Which device is used to convert AC into DC?
    a) Rectifier
    b) Transformer
    c) Inductor
    d) Oscillator
    Answer: a) Rectifier

32. Ohm's law is given by:
    a) $V = IR$
    b) $P = VI$
    c) $F = ma$
    d) $W = Fd$
    Answer: a) $V = IR$

33. The angle of incidence is equal to the angle of reflection in:
    a) Refraction
    b) Reflection
    c) Diffraction
    d) Interference
    Answer: b) Reflection

34. The focal length of a concave lens is:
    a) Positive
    b) Negative
    c) Zero
    d) Infinity
    Answer: b) Negative

35. Which of the following is not a scalar quantity?
    a) Speed
    b) Work
    c) Energy
    d) Momentum
    Answer: d) Momentum

36. Sound waves are:
    a) Transverse waves
    b) Longitudinal waves
    c) Electromagnetic waves
    d) Stationary waves
    Answer: b) Longitudinal waves

37. The unit of gravitational constant (G) is:
    a) $N m²/kg²$
    b) $N m/kg²$
    c) $kg/m²$
    d) $N/m²$
    Answer: a) $N m²/kg²$

38. The total energy of a satellite in orbit is:
    a) Always positive
    b) Always negative
    c) Zero
    d) Depends on the altitude
    Answer: b) Always negative

39. The velocity ratio of an inclined plane is given by:
    a) Load/Effort
    b) Effort/Load
    c) Height/Length
    d) Length/Height
    Answer: d) Length/Height

40. The unit of magnetic flux is:
    a) Tesla
    b) Weber
    c) Henry
    d) Coulomb
    Answer: b) Weber

41. In a uniform circular motion, the centripetal force acts:
    a) Tangentially
    b) Outward
    c) Toward the center
    d) Away from the center
    Answer: c) Toward the center

42. The momentum of a body is the product of:
    a) Force and time
    b) Mass and velocity
    c) Mass and acceleration
    d) Velocity and acceleration
    Answer: b) Mass and velocity

43. Hooke's law states that stress is directly proportional to:
    a) Force
    b) Strain
    c) Volume
    d) Area
    Answer: b) Strain

44. The time period of a simple pendulum depends on:
    a) Mass of the bob
    b) Length of the pendulum
    c) Amplitude of oscillation
    d) All of the above
    Answer: b) Length of the pendulum

45. The absolute zero temperature is equivalent to:
    a) 0°C
    b) -100°C
    c) -273°C
    d) 100 K
    Answer: c) -273°C

46. Inertia is the property of a body to resist:
    a) Velocity
    b) Acceleration
    c) Force
    d) Change in state of motion
    Answer: d) Change in state of motion

47. A photon has zero:
    a) Mass
    b) Energy
    c) Momentum
    d) Velocity
    Answer: a) Mass

48. The dimensional formula of energy is:
    a) [MLT⁻²]
    b) [ML²T⁻²]
    c) [ML²T²]
    d) [M⁻¹L²T⁻²]
    Answer: b) [ML²T⁻²]

49. The refractive index of a medium is defined as:
    a) Speed of light in vacuum/speed of light in the medium
    b) Speed of light in the medium/speed of light in vacuum
    c) Wavelength in vacuum/wavelength in medium
    d) None of the above
    Answer: a) Speed of light in vacuum/speed of light in the medium

50. Electromagnetic waves do not require:
    a) A medium for propagation
    b) Electric field
    c) Magnetic field
    d) Both electric and magnetic fields
    Answer: a) A medium for propagation