Quiz  /  Engineering Physics Gate & PSU MCQ Questions With Answers

  • 1. 
    At 0 kelvin, all the energy levels below fermi level are

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

  • 2. 
    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

  • 3. 
    Electromagnetic waves are

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

  • 4. 
    Which is stronger in bending equal area square or circular beam

  • Circular beam
  • Both are equally strong
  • ) None

  • 5. 
    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

  • 6. 
    The product of the tangential force acting on the shaft and radius of shaft known as

  • Torsional rigidity
  • Flexural rigidity
  • Bending moment
  • Twisting moment

  • 7. 
    A sudden jump anywhere on the Bending moment diagram of a beam is caused by

  • Couple acting at that point
  • Couple acting at some other point
  • Concentrated load at the point
  • Uniformly distributed load or Uniformly varying load on the beam

  • 8. 
    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

  • 9. 
    Which is NOT a characteristic of a LASER?

  • High intensity
  • unidirectional
  • White light
  • Coherent

  • 10. 
    Which of the following is NOT a polarization mechanism in dielectric materials?

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

  • 11. 
    Light amplification in LASER is achieved by

  • Population inversion
  • Stimulated emission
  • Spontaneous emission
  • Pumping

  • 12. 
    By applying a force, the shape of a body is changed, then the corresponding stress is known as

  • Tensile stress
  • Bulk stress
  • Shearing stress
  • Compressive stress

  • 13. 
    Bending stresses are due to

  • Shear forces
  • Bending moments
  • Thrust
  • All of these

  • 14. 
    The Young’s modulus for a perfect rigid body is

  • 0
  • 1
  • 0.5
  • infinity

  • 15. 
    The unit of Torque in SI units

  • kg-m
  • kg-cm
  • N-m
  • N/m2
Report Question
warning
access_time
  Time