Welcome to Physics Initial Test 1, a specialized online practice module designed specifically for candidates preparing for the initial academic tests of the Pakistan Armed Forces—including Pakistan Air Force (PAF) (GDP, CAE, Aeronautical Engineering, Airmen), Pak Army (Technical Cadet Course – TCC), and Pak Navy (PN Cadet, Operations, Engineering Branches).
Results
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#1. A vector having magnitude equal to given vector but in opposite direction is called
#2. If A = 3i + 6j, B = xi + k and A.B = 12, then x will be equal to
#3. When two equal and opposite vectors are added, then their resultant will have
#4. In SI system of units, the velocity is measured in
#5. A ball is thrown vertically upward with an initial velocity of 49 m/s. The maximum height it will reach will be
#6. The terminal velocity of a rain droplet of mass m and radius r is
#7. Mathematically torque is expressed by
#8. The direction of torque T = r x F is found by
#9. The rate of change of angular momentum of a body is equal to
#10. If G becomes four times, then ‘g’ will become
#11. Below the surface of earth, the value of g
#12. The unit of Planck’s constant in C.G.S system of units is
#13. Velocity of sound in air is
#14. In Young’s Double Slit experiment, interference fringes are produced by using green light. To increase the separation of the fringes:
#15. In Young’s Double Slit experiment, the position of mth dark fringe on the screen from center is given by:
#16. Which one of the following properties prove the transverse nature of light?
#17. A refracting substance bounded by one or two spherical surfaces is called
#18. A lens which converges a parallel beam of light to a single point is called
#19. If the size of the image of a 10 mm high object is 2 cm, then magnification produced by the lens is
#20. If the reading on Fahrenheit scale is double of its numerical value on the centigrade scale, then that reading on centigrade scale will be
#21. Entropy of universe during any natural process
#22. Fifteen hundred calories are added to 100 grams of gold when its temperature is 20°C. The resulting temperature of gold will be (specific heat of gold is 0.03)
#23. Heat energy added to a system under isothermal conditions appears as
#24. Charles law states that the volume of a given mass of a gas is directly proportional to
#25. The Fahrenheit and Kelvin scales will have the same reading when temperature is
#26. Capacitors and capacitance 2μF, 3μF and 4μF are connected in series. The equivalent capacitance will be
#27. Potential difference between two points in an electric field is the definition of
#28. The force of attraction between two oppositely charged bodies is proportional to
#29. A battery of 6 volts is short circuited by a copper wire. What will be the potential difference across its terminals
#30. The filament of lighted bulb obeys
#31. The resistance of wire of length L is 8 Ω. What fraction of its length must be increased to increase its resistance four times
#32. What is the current in a 2 x 10^6 ohm resistors having a potential difference of 2 x 10^3 volts?
#33. The phenomenon in which a change of current in one coil produces an induced emf in another coil nearly is called
#34. What does happen to an electron in a conductor if an alternating current is allowed to flow through it
#35. Frequency of AC used in Pakistan is
#36. The relation between Tesla and Gauss is
#37. When a wire of length 3 cm is moved with a velocity of 2 m/s perpendicularly in a magnetic field of strength 10 tesla then the e.m.f induced is
#38. To measure current through a circuit, an ammeter is connected in
#39. The working of galvanometer depends upon torque exerted on a current carrying coil placed in a
#40. The second law of thermodynamics is concerned with the situation in which
#41. The percentage efficiency of Carnot’s engine is given by
#42. The unit of thermodynamic temperature scale is
#43. Physics is one of the branches of
#44. Which expression represents a NAND operation?
#45. A common point between OR and AND gates is that
#46. The production of electrons in a cathode-ray tube is
#47. A sinusoidal trace is observed on a CRO screen. For this alternating potential was given to
#48. If a charge Q is dispersed over two spheres of radii R and r such that their surface charge densities are equal. What is the ratio of their charges
#49. Transformer works on
#50. What will be the maximum velocity of 1 kg mass attached to a spring of constant K
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PHYSICS INITIAL TEST 1
Welcome to Physics Initial Test 1, a specialized online practice module designed specifically for candidates preparing for the initial academic tests of the Pakistan Armed Forces—including Pakistan Air Force (PAF) (GDP, CAE, Aeronautical Engineering, Airmen), Pak Army (Technical Cadet Course – TCC), and Pak Navy (PN Cadet, Operations, Engineering Branches). This practice quiz focuses on foundational mechanics, physical quantities, vector analysis, and high-frequency multiple-choice questions needed to clear your computer-based military entrance exam with high marks.
Key Topics Covered in Physics Initial Test 1
To secure top marks in the Physics academic paper during your Armed Forces selection test, make sure to thoroughly revise these core physical concepts assessed in this module:
- Measurements & Physical Quantities: Base and derived SI units, dimensional analysis, scalar and vector properties, and error estimation.
- Vectors & Equilibrium: Vector addition, dot and cross products, torque, conditions of equilibrium, and force component resolution.
- Motion & Kinematics: Newton’s laws of motion, momentum conservation, impulse, projectile motion trajectories, and work-energy formulas.
- Work, Energy & Power: Work done by variable forces, kinetic and potential energy conversions, power output calculations, and efficiency metrics.
High-Frequency Sample MCQs for Practice
Test your understanding with these representative Physics MCQs frequently asked in tri-services academic tests:
1. Which of the following is a fundamental base unit in the SI system?
A) Newton
B) Joule
C) Kelvin
D) Watt
Answer: C) Kelvin
2. The dot product of two mutually perpendicular vectors is equal to:
A) Maximum
B) Zero
C) Unity
D) Negative
Answer: B) Zero
3. What is the dimensions of force in terms of fundamental SI quantities?
A) $[M L T^{-1}]$
B) $[M L T^{-2}]$
C) $[M L^2 T^{-2}]$
D) $[M L^{-1} T^{-2}]$
Answer: B) $[M L T^{-2}]$
4. The angle of projection at which the maximum horizontal range is achieved by a projectile is:
A) 30°
B) 45°
C) 60°
D) 90°
Answer: B) 45°
5. The rate of doing work is defined as:
A) Force
B) Energy
C) Power
D) Momentum
Answer: C) Power
6. When a body moves in a circular path with constant speed, its acceleration is directed:
A) Along the tangent
B) Away from the center
C) Towards the center
D) Zero
Answer: C) Towards the center
7. Linear momentum is conserved in which type of collision?
A) Elastic collisions only
B) Inelastic collisions only
C) Both elastic and inelastic collisions
D) Neither elastic nor inelastic
Answer: C) Both elastic and inelastic collisions
Detailed Overview of Physics Initial Test 1 Preparation
Preparing for Physics Initial Test 1 requires a solid grasp of core formulas and rapid problem-solving techniques. In military selection centers, the computer-based Physics paper evaluates your conceptual clarity and formula retention under strict time limits. Regular practice with structured questions helps streamline your calculation speed, master dimensional analysis, and gain complete confidence for test day.
Effective Revision Tips for Test 1
- Master Dimensional Formulas: Memorize standard dimensions for common quantities like force, work, momentum, and pressure for quick numerical verification.
- Review Vector Rules: Focus on scalar/vector products and torque conditions, as these form a recurring portion of military entrance exams.
- Timed Practice: Solve practice questions rapidly to build optimal time management skills under real testing conditions.
Physics Academic Test Preparation: Mechanics & Motion in One Dimension
Essential Guide for Pakistan Armed Forces Initial Selection (PMA, PAF & Navy)
Mechanics is the backbone of any introductory physics syllabus, and it forms a crucial part of the computer-based academic screening tests for the Pakistan Army, Navy, and Air Force. Whether you are applying for the PMA Long Course, General Duty Pilot (GDP), or technical branches in the Navy, questions evaluating displacement, velocity, acceleration, and equations of motion appear consistently. Building a strong conceptual foundation in one-dimensional motion is essential to clearing these tests swiftly.
Do not just memorize formulas. Understand the physical meaning of the slope under velocity-time graphs and area under acceleration-time graphs, as graphical analysis questions are frequent in initial tests.
Key Core Topics Covered in Physics Quiz 1
- Scalars and Vectors: Distinguishing between scalar quantities (mass, distance, time, speed) and vector quantities (displacement, velocity, acceleration, force). Vector addition and resolution rules.
- Distance and Displacement: Understanding scalar path length versus net vector displacement. Recognizing conditions where displacement is zero while distance is non-zero.
- Speed and Velocity: Instantaneous versus average speed and velocity calculations. Interpreting uniform and variable acceleration scenarios.
- Equations of Uniformly Accelerated Motion: Applying kinematic equations ($v = u + at$, $s = ut + \frac{1}{2}at^2$, and $2as = v^2 – u^2$) to free-fall objects under gravity ($g \approx 9.8 \text{ m/s}^2$).
Key Kinematic Relations
- Average Velocity: $v_{\text{avg}} = \frac{u + v}{2}$ (only valid for constant acceleration)
- Free Fall Time to Reach Max Height: $t = \frac{u}{g}$
- Maximum Height Reached: $H_{\text{max}} = \frac{u^2}{2g}$
Attempt Physics Quiz 1 below to test your reaction speed, mental math, and kinematic problem-solving under examination time limits.
Useful Resources & Next Steps
- Next Quiz: Practice Physics Initial Test 2
- Main Hub: Access All Forces Academic Online Quizzes
- Official Websites: