Welcome to Physics Initial Test 6, an advanced 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
Congratulations
Sorry!! Better luck next time
#1. The number of seconds in one year are
#2. Dimension of G are
#3. Galvanometer is a device used for the deflection and measurement of
#4. SI system is based upon ______ kind of units.
#5. Reduce the following figure up to three significant figure: 64.4567
#6. Fractional error in a measured quantity is determined by
#7. Dimension of coefficient of viscosity is
#8. Slope of displacement time graph gives
#9. Range of projectile is maximum when thrown at an angle of
#10. The drag force increases if the speed of the object moving through a fluid
#11. When a droplet falls through a medium with terminal velocity, the acceleration is
#12. Bernoulli’s equation is the fundamental equation in fluid dynamics that relates pressure to
#13. In deriving Bernoulli’s equation we assume that the fluid is
#14. The distance between the objective and eye-piece of a telescope in normal adjustment is
#15. A simple astronomical telescope consists of
#16. An optical instrument used to see very far off objects is called
#17. If focal length of objective is increased
#18. In compound microscope, the focal length of eye piece is
#19. A particle performs simple harmonic motion. Find its maximum speed if its amplitude is 0.10 m and frequency 5.0 Hz.
#20. A body performing S.H.M. has a displacement x given by the equation x = 20sin(88t) where t is time in seconds. What is the frequency of oscillation?
#21. When an atom of helium loses all electrons, then it is called
#22. The mass of a particle moving with the velocity of light is
#23. Pinhole camera was invented by
#24. The limit below which the Hooke’s law holds well is called
#25. The atoms or molecules in a crystalline solid are held together by
#26. Upon applying some unbalanced external stress, the deformation may be observed in
#27. Lenz’s law is a consequence of the law of conservation of
#28. The expression PV^gamma = Constant holds good in
#29. The rate of change of angular momentum of a body is equal to
#30. Identify the correct expression for the molar volume V_m of a gas, where all symbols carry their standard meaning
#31. Calculate the number of atoms in an ideal gas at S.T.P. (T = 27°C, P = 100 kPa)
#32. The electronic circuits which perform various logic operations are called
#33. The output of a two-input OR gate is ‘0’ only when
#34. The output of a two-input AND gate has output ‘1’ only when
#35. If an electron is accelerating through a potential difference of 500 volt. The velocity obtained by the electron will be
#36. The temperature of hot junction of a thermocouple changes from 80°C to 100°C. Percentage change in thermoelectric power will be
#37. Current provided by a battery is maximum when
#38. Total number of lines of magnetic induction pass normally through a unit area is called
#39. The magnetic flux is also called
#40. The induced e.m.f. is produced in a circuit due to
#41. Electrons move at right angles to a magnetic field of 0.03T and enter with a velocity 9 X 10^7 m/s. The value of e/m will be ______ (Given radius of circular path = 1.764 cm)
#42. An oil drop with charge ne is held stationary between two plates with an external potential difference of 500 volt. If the size of the drop is doubled without any change of charge, the potential difference required to keep the drop stationary will be
#43. The momentum of a photon of energy 1 MeV, in kg*m/s, will be
#44. The work function of a metal is eV. On making light of wavelength 3000 Å incident on this metal, the velocity of photoelectrons emitted from it for photoelectric emission will be
#45. In Wilson cloud chamber, the beta-particle leave
#46. A Geiger counter counts radioactive particles by
#47. gamma-rays show ______ in Wilson cloud chamber
#48. I^131 used for the remedy of
#49. The amount of strain energy stored in a deformed material is expressed as
#50. Substances which break just after the elastic limit is crossed are called
🌟🌟🌟🌟🌟🌟🌟🌟🌟
🌟🌟🌟🌟🌟🌟🌟🌟🌟🌟🌟🌟🌟🌟
🌟🌟🌟🌟🌟🌟🌟🌟🌟
PHYSICS INITIAL TEST 6
Welcome to Physics Initial Test 6, an advanced 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 nuclear particle physics, optical instruments, relativistic mechanics, advanced wave phenomena, and high-frequency multiple-choice questions needed to clear your computer-based military entrance exam with distinction.
Key Topics Covered in Physics Initial Test 6
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:
- Particle & High-Energy Physics: Fundamental forces of nature, subatomic particles (leptons, hadrons, quarks), radiation detectors, and particle accelerators.
- Optical Instruments & Fiber Optics: Compound microscopes, astronomical telescopes, total internal reflection, step-index fibers, and optical magnification.
- Advanced Special Relativity: Time dilation, length contraction, relativistic mass expansion, and mass-energy conversion principles.
- Wave Optics & Polarization: Brewster’s law, polarization by reflection and double refraction, plane-polarized light, and optical activity.
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 fundamental forces has the shortest range in nature?
A) Gravitational force
B) Electromagnetic force
C) Strong nuclear force
D) Weak nuclear force
Answer: D) Weak nuclear force
2. Quarks are fundamental subatomic particles that combine to form:
A) Leptons
B) Photons
C) Hadrons
D) Neutrinos
Answer: C) Hadrons
3. What physical phenomenon enables light signals to travel through optical fibers without significant loss?
A) Refraction
B) Total internal reflection
C) Diffraction
D) Polarization
Answer: B) Total internal reflection
4. According to special relativity, as the velocity of an object approaches the speed of light, its length along the direction of motion:
A) Increases
B) Decreases
C) Remains constant
D) Becomes zero immediately
Answer: B) Decreases
5. The magnifying power of a simple astronomical telescope in normal adjustment is given by:
A) $f_o + f_e$
B) $f_o / f_e$
C) $f_e / f_o$
D) $f_o \times f_e$
Answer: B) $f_o / f_e$
6. Light waves can be polarized because they are strictly:
A) Longitudinal waves
B) Transverse waves
C) Mechanical waves
D) Stationary waves
Answer: B) Transverse waves
7. In a Wilson Cloud Chamber, the path of an ionizing particle is made visible by condensate drops formed on:
A) Dust particles
B) Supercooled vapor
C) Saturated ions
D) Gaseous molecules
Answer: C) Saturated ions
Detailed Overview of Physics Initial Test 6 Preparation
Preparing for Physics Initial Test 6 requires a comprehensive review of optical setups, particle classifications, and modern physics principles. In military selection centers, the computer-based Physics exam evaluates both speed and conceptual clarity across complex topics. Regular practice with structured question sets ensures rapid formula recall, accurate optical calculations, and maximum confidence during your military academic test.
Effective Revision Tips for Test 6
- Master Relativistic Trends: Remember that speed increases cause time dilation ($t > t_0$), length contraction ($L < L_0$), and mass increase ($m > m_0$).
- Review Optical Formulas: Memorize magnification ($M = f_o / f_e$) and tube length ($L = f_o + f_e$) equations for astronomical telescopes.
- Practice Timed Quizzes: Solve practice questions rapidly to build optimal time management skills under real testing conditions.
Useful Resources & Next Steps
- Main Hub: Access All Forces Academic Online Quizzes
- Official Websites:
Physics Academic Test Preparation: Heat & Thermodynamics
Laws of Thermodynamics, Heat Engines, Thermal Expansion & Entropy
Thermodynamics and thermal physics represent core branches of physical science evaluated in the initial computer-based academic tests for the Pakistan Armed Forces. Candidates applying for engineering, aviation, and technical branches must demonstrate clear concepts regarding temperature scales, heat transfer mechanisms, internal energy, the laws of thermodynamics, and the efficiency of heat engines. Mastering these principles guarantees quick answers to thermal physics questions under exam timers.
Focus heavily on the first law of thermodynamics (conservation of energy in non-isolated systems) and sign conventions for heat added and work done by a system.
Major Topics Covered in Physics Quiz 6
- Temperature Scales and Thermal Expansion: Conversions between Celsius, Fahrenheit, and Kelvin temperature scales. Linear and volumetric thermal expansion coefficients in solids and liquids.
- Kinetic Theory of Gases: Root-mean-square velocity of gas molecules, pressure-temperature relationship, and average translational kinetic energy per molecule ($E_k = \frac{3}{2}kT$).
- First Law of Thermodynamics: Mathematical expression ($\Delta U = Q – W$), isothermal, adiabatic, isobaric, and isochoric thermodynamic processes.
- Second Law and Heat Engines: Kelvin-Planck and Clausius statements, Carnot engine cycle efficiency ($\eta = 1 – T_2/T_1$), and concept of entropy as a measure of system disorder.
Essential Thermodynamics Formulas
- First Law: $\Delta U = Q – W$
- Carnot Efficiency: $\eta = \left(1 – \frac{T_C}{T_H}\right) \times 100\%$ (Temperatures strictly in Kelvin)
- RMS Speed: $v_{\text{rms}} = \sqrt{\frac{3RT}{M}}$
Take Physics Quiz 6 below to test your analytical speed and thermal problem-solving capabilities.