PHYSICS PART 3 ( ADRE)

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PHYSICS PART 3

PHYSICS PART 3  (ADRE)

1. A vehicle moving on a circular path experiences ________?

   - [A] Centripetal force

   - [B] Centrifugal force

   - [C] Gravitational force

   - [D] None of the above


   - **Answer: [A] Centripetal force** ¹


2. Which among the following is measured by an Odometer?

   - [A] Pressure

   - [B] Height

   - [C] Distance

   - [D] Velocity


   - **Answer: [C] Distance** ¹


3. The power of a lens is measured in:

   - [A] Diopters

   - [B] Aeon

   - [C] Lumen

   - [D] Candela


   - **Answer: [A] Diopters** ¹


4. Which among the following orbits is more prone to space debris or space junk in comparison to others?

   - [A] Polar Sun Synchronous Orbit

   - [B] Low Earth Orbit

   - [C] Geosynchronous orbit

   - [D] Geostationary Orbit


   - **Answer: [B] Low Earth Orbit** ¹


5. Which radio frequencies are used around the world in air navigational systems?

   - [A] Very Low Frequency (VLF)

   - [B] Very High Frequency (VHF)

   - [C] Tetrahertz Radiation (THF)

   - [D] Ultra High Frequency (UHF)


   - **Answer: [B] Very High Frequency (VHF)** ¹


6. What is the range of Strong Nuclear force?

   - [A] Infinite

   - [B] Very short Subnuclear size

   - [C] Very short Nuclear size

   - [D] None


   - **Answer: [B] Very short Subnuclear size** ¹


7. The acceleration due to gravity on any planet does not depend on which of the following?

    - [A] Radius of the planet

    - [B] Mass of the planet

    - [C] Density of the planet

    - [D] Mass of the object


    - **Answer: [D] Mass of the object** ¹


11. What is the unit of electric current?

    - [A] Volt

    - [B] Ampere

    - [C] Ohm

    - [D] Watt


    - **Answer: [B] Ampere** 


12. Which law states that the induced electromotive force (EMF) in any closed circuit is equal to the negative rate of change of magnetic flux through the circuit?

    - [A] Faraday's Law of Electromagnetic Induction

    - [B] Ohm's Law

    - [C] Coulomb's Law

    - [D] Lenz's Law


    - **Answer: [A] Faraday's Law of Electromagnetic Induction** 


13. What is the SI unit of work and energy?

    - [A] Joule

    - [B] Newton

    - [C] Watt

    - [D] Kilogram


    - **Answer: [A] Joule** 


14. Which type of mirror always forms a virtual, erect, and diminished image?

    - [A] Convex mirror

    - [B] Concave mirror

    - [C] Plane mirror

    - [D] Spherical mirror


    - **Answer: [A] Convex mirror** 


15. Which phenomenon explains why the sky appears blue during the day?

    - [A] Dispersion

    - [B] Diffraction

    - [C] Scattering

    - [D] Reflection


    - **Answer: [C] Scattering** 


16. What is the speed of light in a vacuum?

    - [A] 3 × 10^8 meters per second

    - [B] 3 × 10^6 meters per second

    - [C] 3 × 10^10 meters per second

    - [D] 3 × 10^4 meters per second


    - **Answer: [A] 3 × 10^8 meters per second** 


17. Which law states that the pressure of a gas is inversely proportional to its volume at constant temperature?

    - [A] Boyle's Law

    - [B] Charles's Law

    - [C] Gay-Lussac's Law

    - [D] Avogadro's Law


    - **Answer: [A] Boyle's Law** 


18. What is the process by which a solid directly changes to a gas without passing through the liquid phase?

    - [A] Sublimation

    - [B] Evaporation

    - [C] Condensation

    - [D] Melting


    - **Answer: [A] Sublimation** 


19. Which type of wave does not require a medium for propagation?

    - [A] Sound wave

    - [B] Light wave

    - [C] Water wave

    - [D] Seismic wave


    - **Answer: [B] Light wave** 


20. What is the acceleration due to gravity on the Moon's surface (approximately)?

    - [A] 1.6 meters per second squared

    - [B] 9.8 meters per second squared

    - [C] 5.7 meters per second squared

    - [D] 3.2 meters per second squared


    - **Answer: [A] 1.6 meters per second squared** 



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