About Engineering Physics

Following are some of the multiple choice questions on the Engineering Physics with answers that will help the students in developing their knowledge.

Engineering Physics MCQ

1. Find the difference between two energy levels of Neon if the transition levels gives a photon of wl 6328 Angstrom.

  • 3.14 X 10-19 J
  • 3.14 J
  • 3.14 x 10-12 J
  • 1.96 J

2. Which Engineering Field is this...Create technology to advance food, biological, irrigation, and machinery systems?

  • Materials
  • Food Science
  • Chemical
  • Agricultural

3. Which of the following is NOT a step in the design and engineering process that and engineer may follow?

  • Define the problem
  • Design a solutino
  • Develop a hypothesis
  • Deliver the product

4. Sports engineers would MOST LIKELY use which of the following in the design, development and improvement of sports equipment to help them improve their skills.

  • chemical engineering
  • mechanical engineering
  • electrical engineering
  • All of above

5. Identify the Nobel Laureate Indian Scientist in Physics and Chemistry.

  • All of above
  • Venki Ramakrishnan
  • Subrahmanyan Chandrasekhar
  • Sir Chandrasekhara Venkata Raman

6. Sports engineers design, develop and test sports equipment, using math and science to make improvements.

  • True
  • False

7. Which is MOST LIKELY the LAST step an engineer may follow.

  • define the problem
  • develop ideas
  • Deliver the product
  • Do some math

8. Software Engineers design such things as:

  • Circuits and computer chips
  • The Golden Gate Bridge in San Francisco
  • Software for computers to use
  • Tools, engines, and machines

9. The design and construction of buildings, dams, water treatment and carrying systems, air pollution controls, and transportation systems are the responsibilities of __________ engineers.

  • Aerospace
  • Manufacturing
  • Mechanical
  • Civil

10. What is engineering?

  • Using science to solve practical problems to better our environment.
  • Using math and science to solve practical problems to better our society, economy and environment.
  • Using math and history to recover past discoveries.
  • Using man made items to understand nature.

11. What are the 4 major categories of engineering?

  • Mechanical, Chemical, Civil, Electrical
  • Mechanical, Biomedical, Civil, Electronics
  • Mechanical, Chemical, Structural, Electrical
  • Mechanical, Biomedical, Structural, Electrical

12. What engineering is this? Designs, develop, and test the manufacture of electrical equipment and large-scale electrical systems.

  • Civil
  • Electrical
  • Chemical
  • Mechanical

13. This type of engineer designs airplanes, helicopters, and rockets.

  • Electrical Engineer
  • Aerospace Engineer
  • Mechanical Engineer
  • Physics Engineer

14. Which of the following is NOT a polarization mechanism in dielectric materials?

  • Electronic polarization
  • Space charge polarization
  • Ionic Polarization
  • Electrical polarization

15. According to Heisenbergs uncertainty principle, which of the following is correct?

  • Δx.Δpx ≥h4π\Delta x.\Delta p_{x\ }\ge\frac{h}{4\pi}Δx.Δpx ​≥4πh​
  • Δx.Δpx≤h4π\Delta x.\Delta p_x\le\frac{h}{4\pi}Δx.Δpx​≤4πh​
  • Δx.Δpx≤h2π\Delta x.\Delta p_x\le\frac{h}{2\pi}Δx.Δpx​≤2πh​
  • Δx.Δpx=h4π\Delta x.\Delta p_x=\frac{h}{4\pi}Δx.Δpx​=4πh​

16. The electrons obey

  • Bose-Einstein statistics
  • Fermi-Dirac statistics
  • Maxwell -Boltzmann statistics
  • none of the above

17. The principle of optical fibers is

  • reflection
  • refraction
  • total internal reflection
  • dispersion

18. Shockwaves propogate in

  • subsonic speeds
  • ultrasonic speeds
  • supersonic speeds
  • fastsonic speeds

19. Electromagnetic waves are

  • longitudinal waves
  • pressure waves
  • supersonic waves
  • transverse waves

20. The p-type semiconductor is obtained by doping the intrinsic semiconductor with

  • pentavalent impurities
  • bivalent impurities
  • trivalent impurities
  • any impurity atoms

21. The value of Poisson's ratio lies between

  • 0 to 0.5
  • -1 to 0.5
  • -0.5 to 1
  • -0.5 to 0.5

22. Young's modulus of the material is defined as

  • Longitudinal stress/Longitudinal strain
  • Longitudinal strain/Longitudinal stress
  • Volume stress/ volume strain
  • linear strain/lateral strain

23. How is population inversion achieved in Carbon dioxide laser?

  • optical pumping
  • by electrical discharge
  • chemical pumping
  • none of the above

24. The concept of matter wave was suggested by_________

  • Heisenberg
  • Einstein
  • Schrodinger
  • Louis de Broglie

25. At 0 kelvin, all the energy levels below fermi level are

  • Completely empty
  • Completely filled
  • Partially filled
  • Half filled

26. Which is NOT a characteristic of a LASER?

  • High intensity
  • unidirectional
  • White light
  • Coherent

27. Which of the following equation represents Simple Harmonic motion?

  • y=mx+c
  • x= a sin wt
  • y = Aebt
  • x= a (wt)

28. At resonance,

  • the natural frequency becomes equal to applied force frequency
  • The amplitude becomes maximum
  • damping becomes minimum
  • all the three options

29. Laser is a monochromatic source of light. This means all the light waves have...

  • same wavelength
  • same phase
  • same intensity
  • same direction

30. In spontaneous emission the incident and emitted waves are...

  • similar
  • different
  • amplified
  • coherent

31. The resonator consists of ... mirrors at least.

  • 2
  • 3
  • 4
  • 5

32. The first laser was built in...

  • 1920
  • 1940
  • 1960
  • 1980

33. The process in which the electrons in the ground state are vibrated to the excited states by providing extra energy from energy sources is called as

  • Population Inversion
  • Spontaneous emission
  • Stimulated emission
  • Pumping

34. In He-Ne laser active energy levels for transitions are provided by

  • Ne atoms
  • He atoms
  • Both He and Ne
  • Co2 atoms

35. We get continuous laser from

  • Ruby
  • Diode
  • He-Ne
  • Co2

36. We get pulse laser from

  • Ruby rod
  • He, Ne laser 10:1 ratio
  • CO2 laser
  • Diode laser

37. In Physics lab the laser we use is

  • He-Ne laser
  • Ruby laser
  • Diode laser
  • Co2 laser

38. Which of the following statements are true?LASER is used as optical source in single mode fibers.LASER lights are highly incoherent.

  • 1. is true and 2. is false
  • 1. is false and 2. is true
  • Both 1 & 2 are true
  • Both 1 & 2 are false

39. The coherent nature of light from LASER is due to

  • Spontaneous emission
  • Stimulated Emission
  • Absorption
  • Pumping

40. Light amplification in LASER is achieved by

  • Population inversion
  • Stimulated emission
  • Spontaneous emission
  • Pumping

41. Minimum number of energy states required to achieve population inversion is

  • 1
  • 2
  • 3
  • 4

42. The lifetime of electrons are more in

  • Pump state
  • Excited state
  • Meta stable state
  • Ground state

43. Laser is a coherent source of light. This means all the light waves....

  • are out of phase
  • are in phase
  • have different directions
  • have same direction

44. In Ruby laser optical pumping is done through

  • external green light
  • electric discharge
  • by heating the system
  • external red light

45. If optical resonator is not formed

  • No output in laser would be there
  • Output would be there but would stop very soon
  • Intensity can't grow
  • No laser would be produced at all

46. According to Einstein at equilibrium

  • Rate of absorption of radiation is equal to rate of stimulated emission
  • Rate of spontaneous emission is equal to rate of stimulated emission
  • Rate of absorption of radiation is equal to rate of spontaneous emission
  • Rate of stimulated emission is constant

47. Population inversion for Lasing action means

  • More electrons in ground state than excited state
  • More electrons in any excited state than ground state
  • More electrons in 1st excited than ground state
  • More electrons in metastable state than ground state

48. Life time of electron in ground state of an atom in seconds

  • 0
  • equal to half life period
  • 1
  • Infinite

49. What is the energy of Photon?

  • E = hνE\ =\ h\nuE = hν
  • E = mc2E\ =\ mc^2E = mc2
  • E = h2ν2E\ =\ h^2\nu^2E = h2ν2
  • E =hmvE\ =\frac{h}{mv}E =mvh​

50. According to J. Maxwell theory Light is an

  • Electromagnetic Wave
  • Acoustic Wave
  • Tidal Wave
  • Longitudinal Wave

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