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CSS MCQs

Civil Superior Services — Complete MCQ Bank

127 Questions
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Physics Medium Uploaded: 13 Jul 2026

Which law states that planets move in elliptical orbits with the sun at one focus?

  • ANewton's Law of Gravitation
  • BGalileo's Law of Motion
  • CKepler's First Law
  • DHubble's Law
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Physics Medium Uploaded: 13 Jul 2026

What is the centripetal force?

  • AForce pushing an object outward in circular motion
  • BForce causing linear acceleration
  • CForce equal to mass times velocity
  • DForce directed toward the centre of circular motion
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Physics Hard Uploaded: 13 Jul 2026

Which principle states that no two electrons in an atom can have the same set of four quantum numbers?

  • AHeisenberg Uncertainty Principle
  • BSuperposition Principle
  • CAufbau Principle
  • DPauli Exclusion Principle
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Physics Hard Uploaded: 13 Jul 2026

Which type of spectrum consists of specific discrete wavelengths emitted by excited atoms?

  • AContinuous spectrum
  • BLine emission spectrum
  • CAbsorption spectrum
  • DBand spectrum
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Physics Hard Uploaded: 13 Jul 2026

What is the phenomenon of resonance in physics?

  • AIncrease in amplitude when driving frequency matches natural frequency
  • BDecrease in amplitude of oscillations over time
  • CThe bending of waves around obstacles
  • DSplitting of white light into colours
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Physics Hard Uploaded: 13 Jul 2026

Which type of mirror is used in reflecting telescopes?

  • APlane mirror
  • BParabolic concave mirror
  • CConvex mirror
  • DCylindrical mirror
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Physics Hard Uploaded: 13 Jul 2026

Which effect causes the apparent change in frequency of light from a moving star?

  • APhotoelectric effect
  • BCompton effect
  • CZeeman effect
  • DDoppler effect
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Physics Hard Uploaded: 13 Jul 2026

What is the unit of magnetic flux in the SI system?

  • ATesla
  • BWeber
  • CAmpere
  • DFarad
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Physics Hard Uploaded: 13 Jul 2026

Which effect describes the change in wavelength of X-rays scattered by electrons?

  • APhotoelectric effect
  • BCompton effect
  • CZeeman effect
  • DHall effect
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Physics Medium Uploaded: 13 Jul 2026

Which scale of temperature is used in thermodynamic calculations and starts at absolute zero?

  • AKelvin
  • BCelsius
  • CFahrenheit
  • DRankine