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PPSC MCQs

Punjab Public Service Commission — Complete MCQ Bank

1,997 Questions
Exam Preparation Guide

How to prepare for PPSC

PPSC examinations recruit candidates for Punjab government departments and commonly test general knowledge, current affairs, English and post-related subjects.

Punjab AffairsGeneral KnowledgeCurrent AffairsEnglish
Give special attention to Punjab geography, history and administration alongside the advertised post’s specialist syllabus.
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All Subjects Biology Chemistry Computer Science Current Affairs English Everyday Science General Knowledge Islamic Studies Mathematics Pakistan Studies Physics
291
Physics Medium Uploaded: 17 Aug 2026

The SI unit of electric charge is:

  • ACoulomb
  • BOhm
  • CVolt
  • DAmpere
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292
Physics Medium Uploaded: 17 Aug 2026

The magnifying power of a simple microscope increases when the focal length of its lens is:

  • AMade infinite
  • BIncreased
  • CDecreased
  • DKept constant
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293
Physics Easy Uploaded: 17 Aug 2026

The primary colors of light are:

  • ARed, orange, yellow
  • BRed, green, blue
  • CCyan, magenta, yellow
  • DRed, yellow, blue
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294
Physics Easy Uploaded: 17 Aug 2026

The working principle of an optical fiber is based on:

  • APolarization
  • BRefraction
  • CDiffraction
  • DTotal internal reflection
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295
Physics Medium Uploaded: 17 Aug 2026

The speed of sound in air at room temperature is approximately:

  • A343 m/s
  • B5000 m/s
  • C3 x 10^8 m/s
  • D1500 m/s
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296
Physics Medium Uploaded: 17 Aug 2026

Which characteristic of sound is related to its frequency?

  • APitch
  • BIntensity
  • CLoudness
  • DQuality
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297
Physics Hard Uploaded: 17 Aug 2026

Infrasonic waves have frequencies:

  • AAbove 20,000 Hz
  • BBetween 20 Hz and 20,000 Hz
  • CBelow 20 Hz
  • DAbove 200,000 Hz
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298
Physics Easy Uploaded: 17 Aug 2026

The Doppler effect refers to the change in:

  • AAmplitude of a wave due to relative motion
  • BWavelength of light due to temperature
  • CSpeed of light in different media
  • DFrequency of a wave due to relative motion
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299
Physics Medium Uploaded: 17 Aug 2026

The phenomenon of bending of light around obstacles is called:

  • ARefraction
  • BDiffraction
  • CReflection
  • DDispersion
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300
Physics Medium Uploaded: 17 Aug 2026

Echo is caused by the:

  • ARefraction of sound
  • BDiffraction of sound
  • CInterference of sound
  • DReflection of sound
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