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PPSC MCQs

Punjab Public Service Commission — Complete MCQ Bank

86 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
81
Physics Medium

What is the approximate speed of sound in air at room temperature?

  • A343 m/s
  • B150 m/s
  • C1500 m/s
  • D3000 m/s
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Correct Answer: Option A — 343 m/s
Explanation: Sound travels at approximately 343 metres per second in air at room temperature of about 20 degrees Celsius and this speed increases with temperature.
Submitted by: PaperMCQs
82
Physics Medium

Which type of wave does not require a medium to travel?

  • ASound wave
  • BWater wave
  • CSeismic wave
  • DElectromagnetic wave
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Correct Answer: Option D — Electromagnetic wave
Explanation: Electromagnetic waves such as light radio waves and X-rays can travel through a vacuum without requiring a medium distinguishing them from mechanical waves like sound.
Submitted by: PaperMCQs
83
Physics Easy

What is the SI unit of electric current?

  • AVolt
  • BOhm
  • CAmpere
  • DWatt
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Correct Answer: Option C — Ampere
Explanation: The Ampere named after French physicist Andre-Marie Ampere is the SI base unit of electric current representing the flow of one coulomb of charge per second.
Submitted by: PaperMCQs
84
Physics Easy

Which law states that every action has an equal and opposite reaction?

  • ANewton's First Law
  • BNewton's Second Law
  • CNewton's Third Law
  • DLaw of Gravitation
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Correct Answer: Option C — Newton's Third Law
Explanation: Newton's Third Law states that for every action there is an equal and opposite reaction meaning forces always occur in pairs acting on different objects.
Submitted by: PaperMCQs
85
Physics Easy

What is the SI unit of force?

  • AWatt
  • BJoule
  • CPascal
  • DNewton
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Correct Answer: Option D — Newton
Explanation: The Newton named after Isaac Newton is the SI unit of force defined as the force needed to accelerate a mass of one kilogram at one metre per second squared.
Submitted by: PaperMCQs
86
Physics Easy

Which scientist is known as the Father of Physics?

  • AIsaac Newton
  • BAlbert Einstein
  • CGalileo Galilei
  • DArchimedes
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Correct Answer: Option C — Galileo Galilei
Explanation: Galileo Galilei is widely regarded as the Father of Physics for his pioneering experimental approach to the study of motion mechanics and astronomy in the 16th and 17th centuries.
Submitted by: PaperMCQs
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