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CSS MCQs

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127 Questions
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91
Physics Medium Uploaded: 13 Jul 2026

What is absolute zero temperature in degrees Celsius?

  • A0 degrees Celsius
  • Bminus 100 degrees Celsius
  • Cminus 273 degrees Celsius
  • Dminus 373 degrees Celsius
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92
Physics Hard Uploaded: 13 Jul 2026

What is the unit of luminous intensity in the SI system?

  • ALux
  • BLumen
  • CWatt
  • DCandela
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93
Physics Hard Uploaded: 13 Jul 2026

What is polarisation of light?

  • ASplitting light into its spectrum
  • BRestriction of light vibrations to a single plane
  • CBending of light around obstacles
  • DTotal reflection of light
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94
Physics Medium Uploaded: 13 Jul 2026

Which experiment demonstrated that light behaves as a wave by producing an interference pattern?

  • AYoung's double slit experiment
  • BRutherford's gold foil experiment
  • CMillikan's oil drop experiment
  • DCompton scattering experiment
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95
Physics Medium Uploaded: 13 Jul 2026

What is the phenomenon where two waves superpose to produce regions of maximum and minimum intensity?

  • AInterference
  • BDiffraction
  • CRefraction
  • DPolarisation
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96
Physics Hard Uploaded: 13 Jul 2026

Which device uses the piezoelectric effect to produce ultrasonic waves?

  • ALoudspeaker
  • BMicrophone
  • CElectric motor
  • DUltrasonic transducer
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97
Physics Medium Uploaded: 13 Jul 2026

What is simple harmonic motion?

  • AMotion in a circle at constant speed
  • BOscillatory motion where restoring force is proportional to displacement
  • CUniform linear motion
  • DRandom motion under multiple forces
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98
Physics Hard Uploaded: 13 Jul 2026

Which phenomenon causes a spinning top to precess rather than fall over immediately?

  • AConservation of energy
  • BMagnetic force
  • CGyroscopic effect
  • DCentripetal force only
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99
Physics Hard Uploaded: 13 Jul 2026

What is the escape velocity from Earth's surface approximately?

  • A11.2 km/s
  • B7.9 km/s
  • C5.5 km/s
  • D15 km/s
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100
Physics Medium Uploaded: 13 Jul 2026

What is the principle of conservation of momentum?

  • AMomentum increases with velocity only
  • BTotal momentum of an isolated system remains constant
  • CMomentum equals mass times acceleration
  • DMomentum decreases with time
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