Police Recruitment Exam
Part 1
Solved Past Papers
Top 100 Physics Test MCQs for Police Recruitment (Part 1)
Comprehensive solved Physics past papers for Islamabad Police, Punjab Police, KPK Police, Sindh Police, Balochistan Police, Jail Police, Traffic Police & Highway Police (NHMP). Instant interactive answers with full explanations.
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Q1
What is the SI unit of Force?
Q2
What is the SI unit of Work and Energy?
Q3
What is the SI unit of Power?
Q4
What is the SI unit of Pressure?
Q5
Which instrument is used to measure very small lengths with high precision up to 0.01 mm?
Q6
What is the SI unit of Frequency of a wave?
Q7
What is the SI unit of Electrical Resistance?
Q8
Which of the following is a scalar quantity?
Q9
What is the SI unit of Luminous Intensity?
Q10
Which of the following is a vector quantity?
Q11
What is the rate of change of displacement called?
Q12
What is the acceleration due to gravity (g) near the Earth's surface?
Q13
What does the slope of a distance-time graph represent?
Q14
What is the trajectory of a projectile fired in the air?
Q15
What is the rate of change of velocity called?
Q16
What is the area under a velocity-time graph equal to?
Q17
A body moving with constant speed in a circular path has:
Q18
Which equation represents the first equation of motion?
Q19
When a police car brakes to a stop, its acceleration is:
Q20
The maximum constant velocity attained by a falling body when air resistance equals its weight is called:
Q21
Which law of motion states that 'For every action, there is an equal and opposite reaction'?
Q22
The property of an object to resist changes in its state of rest or uniform motion is called:
Q23
What is the formula for Linear Momentum?
Q24
What is the value of acceleration due to gravity (g) at the center of the Earth?
Q25
What is the escape velocity required to leave Earth's gravitational field?
Q26
Which force keeps a patrol car moving along a curved circular road without skidding?
Q27
Which type of friction has the least magnitude?
Q28
Mass of an object on the Moon compared to its mass on Earth is:
Q29
What happens to the gravitational force between two masses if the distance between them is doubled?
Q30
Seatbelts in police vehicles protect passengers based on the principle of:
Q31
What is the formula for Kinetic Energy (K.E)?
Q32
What is the formula for Gravitational Potential Energy (P.E)?
Q33
One Horsepower (1 hp) is equal to how many Watts?
Q34
Work done is zero when the angle between Force and Displacement is:
Q35
Commercial electricity billing unit 'Kilowatt-Hour' (kWh) is a unit of:
Q36
1 Kilowatt-Hour (1 kWh) is equal to how many Joules?
Q37
The Law of Conservation of Energy states that energy can:
Q38
When a compressed spring is released, its potential energy is converted into:
Q39
What is the efficiency of an ideal machine?
Q40
In a coal-fired power plant, chemical energy is converted into:
Q41
Hydraulic brakes used in modern police vehicles operate on which law?
Q42
Which principle explains why giant steel ships float on water?
Q43
Which instrument is used to measure atmospheric pressure?
Q44
What is the density of pure water at 4°C?
Q45
Why do raindrops assume a spherical shape?
Q46
Which principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure?
Q47
Which instrument is used to determine the specific gravity / density of liquids?
Q48
The internal friction between layers of a moving liquid is known as:
Q49
Hooke's Law states that within the elastic limit, stress is directly proportional to:
Q50
What is the fourth state of matter consisting of ionized gas?
Q51
What is Absolute Zero on the Celsius scale?
Q52
Through which mechanism does heat travel from the Sun to the Earth across empty space?
Q53
Why is mercury commonly used in clinical and lab thermometers?
Q54
At what temperature do Celsius and Fahrenheit thermometer scales read the exact same value?
Q55
Water has maximum density at what temperature?
Q56
The amount of heat required to raise the temperature of 1 kg of a substance by 1 Kelvin is called its:
Q57
Heat transfer in liquids and gases primarily occurs by:
Q58
The First Law of Thermodynamics is a restatement of the:
Q59
When ice melts into water at 0°C, heat is absorbed without a temperature change. This heat is called:
Q60
Cooking in a pressure cooker is faster because increased pressure:
Q61
Sound waves in air are:
Q62
Sound waves cannot travel through:
Q63
What is the approximate speed of sound in air at normal room temperature (20°C)?
Q64
The pitch of a sound depends primarily on its:
Q65
The loudness or intensity of a sound depends on its:
Q66
What is the audible frequency range for normal human ears?
Q67
What is the apparent change in pitch of a police siren as a patrol car approaches and passes an observer?
Q68
What are sound waves with frequencies above 20,000 Hz called?
Q69
What is the minimum distance required between source and reflector to hear a distinct echo in air?
Q70
What unit is used to measure sound intensity level?
Q71
What is the speed of light in a vacuum?
Q72
Which type of mirror is installed in police vehicles as a rear-view mirror for a wide field of view?
Q73
The bending of light rays when passing from one optical medium to another is called:
Q74
Optical fiber communication cables work on the principle of:
Q75
Which type of lens is used to correct short-sightedness (Myopia)?
Q76
The splitting of white light into its seven constituent colors through a glass prism is called:
Q77
What are the three primary colors of light?
Q78
Why does the clear daytime sky appear blue?
Q79
What type of image is always formed on the retina of a normal human eye?
Q80
What is the unit of optical power of a lens?
Q81
According to Ohm's Law, the relationship between Voltage (V), Current (I), and Resistance (R) is:
Q82
How is an Ammeter connected in an electrical circuit to measure electric current?
Q83
How is a Voltmeter connected across a circuit component to measure potential difference?
Q84
What is the function of a safety fuse wire in domestic and vehicle electrical circuits?
Q85
Which device transforms mechanical energy into electrical energy?
Q86
Which device converts electrical energy into mechanical rotational energy?
Q87
An electrical transformer can step up or step down voltage only for:
Q88
What is the formula for Electric Power consumed in a resistor?
Q89
Magnetic field lines outside a bar magnet always emerge from:
Q90
Which hand rule is used to determine the direction of force on a current-carrying conductor in a magnetic field (Motor rule)?
Q91
Which electromagnetic waves are utilized in police wireless VHF/UHF walkie-talkies and radar sets?
Q92
Who discovered the Electron in 1897?
Q93
Who discovered the Neutron inside atomic nuclei in 1932?
Q94
Which element is most widely used as a semiconductor in microchips, transistors, and diodes?
Q95
Which electronic component allows electric current to flow in only one forward direction (rectification)?
Q96
Which type of radioactive radiation has the greatest penetrating power and requires thick lead shielding?
Q97
What is the famous Mass-Energy Equivalence formula proposed by Albert Einstein?
Q98
What is an Alpha particle physically identical to?
Q99
In police night-vision surveillance goggles, which part of the electromagnetic spectrum is detected?
Q100
Which nuclear reaction powers the core of the Sun by fusing hydrogen nuclei into helium?
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