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    Physics – Quiz 9

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    Posted:06 Jul, 2025

    πŸ”¬ Physics MCQ Quiz – Test 9

    πŸ“˜ Build Accuracy, Boost Confidence!

    Welcome to the 9th quiz of our Forces Physics series β€” a focused and time-based challenge for students preparing for Pakistan Army, Navy, and Air Force entry tests. This test is tailored to evaluate your knowledge across critical physics topics.

    You’ll face 50 multiple choice questions (MCQs) selected from areas like motion, waves, electricity, laws of thermodynamics, optics, and electromagnetism β€” topics commonly seen in military academic exams.

    🧠 Why Attempt This Test?
    It improves concept clarity, highlights weak spots, and boosts your time management skills. Whether you’re targeting ISSB or initial selection tests, this quiz helps sharpen your preparation.

    πŸ“Š Quiz Overview:
    βœ… Total Questions: 50
    ⏱️ Time Limit: 18 minutes (approx. 22 seconds per question)
    🎯 Passing Criteria: 50%
    πŸ” Purpose: Evaluate key physics concepts and test accuracy under time pressure.

    πŸ‘‰ Attempt now and level up your exam readiness!

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    Physics Test 9

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    1 / 50

    The photoelectric effect was explained by ?

    2 / 50

    The equation of electric flux is?

    3 / 50

    In the Young double slit experiment, if white light is used then what happens?

    4 / 50

    A valent species is a chemical species that has a ?

    5 / 50

    The unit of angular acceleration is ?

    6 / 50

    constructive and destructive interference can create bands of ?

    7 / 50

    What is the resistance of a 60-watt light bulb that operates at 120 volts?

    8 / 50

    The formula for Stokes' law is as follows ?

    9 / 50

    A negatively doped diode is impure with:

    10 / 50

    The efficiency of a diesel engine is typically between __?

    11 / 50

    magnifying power for astronomical telescope= ?

    12 / 50

    an electric heater with a voltage of 220V and a power of 440W has a resistance of ?

    13 / 50

    Ohm's law obeys only for?

    14 / 50

    The formula for the number of fringes (N) observed in a Michelson interferometer is:

    15 / 50

    The dark and bright pattern formed in the Young's double-slit experiment is known as interference?

    16 / 50

    Planck's constant, which is equal to ?

    17 / 50

    Same atomic number but different atomic mass?

    18 / 50

    When an electron moves perpendicular to magnetic field
    lines, the magnetic force on the electron tends to deflect it in a?

    19 / 50

    if the temperature of the sink is decreased, the efficiency of a Carnot engine ?

    20 / 50

    The SI unit of heat flux is _________?

    21 / 50

    an operational amplifier, also known as ________?

    22 / 50

    Wire of Resistance R is cut into two parts then effect on resistivity?

    23 / 50

    The silver band in the resistor color code indicates a tolerance of _?

    24 / 50

    When a small amount of resistance is connected in parallel to a galvanometer, the resultant circuit behaves as ?

    25 / 50

    One radian is equal to ?

    26 / 50

    Total internal reflection is the phenomenon used in ?

    27 / 50

    The SI unit of Planck's constant is the?

    28 / 50

    It is normal for a person's blood pressure to decrease when they ?

    29 / 50

    The speed of sound in air at 20 Β°C (68 Β°F) is_______?

    30 / 50

    kilowatt-hour (kWh) is equal to ?

    31 / 50

    In an adiabatic process, entropy remains ?

    32 / 50

    Torque and energy have the ?

    33 / 50

    Alpha particles are __?

    34 / 50

    One kilowatt hour of work is equal to ?

    35 / 50

    A bulb does not work according to?

    36 / 50

    When a wave travels from a denser medium to a rarer
    medium, the wavelength increases and the speed of the wave
    increases. The phase angle of the wave?

    37 / 50

    The gate that represents the equation X=A+B is the ?

    38 / 50

    Which one does not work according to resonance ?

    39 / 50

    Pressure increases and velocity decreases according to ?

    40 / 50

    The tyre burst is an example of an?

    41 / 50

    The orbit of a satellite is independent of the _?

    42 / 50

    Lenz's law is in accordance with the___?

    43 / 50

    If a person throws a ball upward while standing on a moving train, the ball will ?

    44 / 50

    A convex lens is used in a ?

    45 / 50

    The vertical component of projectile motion decreases over time, due to the acceleration due?

    46 / 50

    If a circle is divided into 360 parts, then each part is equal to?

    47 / 50

    Light is an __________?

    48 / 50

    If the temperature of the sink decreases, the efficiency of the Carnot engine?

    49 / 50

    The proportionality constant between current and potential difference is ?

    50 / 50

    The condition of resonance is reached when the ________?

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