This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 15 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object. A) Boyle's law. B) Charles's law. C) Bernoulli's principle. D) Archimedes' principle. Show Answer Correct Answer: D) Archimedes' principle. 2. What part of a sound wave is witnessed at the open end of a tube A) Amplitude. B) Pitch. C) Node. D) Antinode. Show Answer Correct Answer: C) Node. 3. Which of the mirrors is used as rear view mirror in vehicles? A) Concave. B) Convex. C) Plane. D) None of above. Show Answer Correct Answer: B) Convex. 4. How many variables may be tested legitimately in any one experiment? A) As many as a physicist can handle. B) Three. C) One. D) Five. Show Answer Correct Answer: C) One. 5. A graph of I versus V for a fixed resistor is: A) A straight horizontal line. B) A curved line. C) A straight diagonal line. D) Only diagonal in the positive direction. Show Answer Correct Answer: C) A straight diagonal line. 6. The optical phenomena, twinkling of stars, is due to A) Atmospheric reflection. B) Total reflection. C) Atmospheric refraction. D) Total refraction. Show Answer Correct Answer: C) Atmospheric refraction. 7. Newton is equivalent to A) 1 $kgms^2$. B) 1 $kgms^{-2}$. C) 1 $kg^{-1}ms^{-1}$. D) 1 $kg^{-}1ms^{-2}$. Show Answer Correct Answer: B) 1 $kgms^{-2}$. 8. Force is directly proportional to: A) Velocity. B) Acceleration. C) Displacement. D) Momentum. Show Answer Correct Answer: B) Acceleration. 9. The instrument installed in a car for measuring the distance travelled by the car is called: A) Barometer. B) Speedometer. C) Anemometer. D) Odometer. Show Answer Correct Answer: D) Odometer. 10. When an object moves through a gas or a liquid. A) Sliding Friction. B) Rolling Friction. C) Fluid Friction. D) None of above. Show Answer Correct Answer: C) Fluid Friction. 11. A person observes a fireworks display from a safe distance of 0.750 kilometer. Assuming that sound travels at 340 meters per second in air, what is the time between the person seeing and hearing a fireworks explosion? A) 0.453 s. B) 2.21 s. C) 410 s. D) 255, 000 s. Show Answer Correct Answer: B) 2.21 s. 12. If the mass of an object is 1000kg on Earth, what is it's mass on the moon? A) 10kg. B) 100kg. C) 1000kg. D) 10, 000kg. Show Answer Correct Answer: C) 1000kg. 13. Branch of physics that examines the physical properties of solid materials and also called condense matter Physics A) Atomic and Nuclear Physics. B) Plasma Physics. C) Optics. D) Solid State Physics. Show Answer Correct Answer: D) Solid State Physics. 14. The internal energy of a system is equal to ..... A) The total energy that its particles have in their kinetic energy stores. B) The total energy that its particles have in their potential energy stores. C) The total energy that its particles have in their kinetic and potential energy stores. D) None of above. Show Answer Correct Answer: C) The total energy that its particles have in their kinetic and potential energy stores. 15. What are the three primary colors of light? A) Red, Yellow, Blue. B) Red, Green, Yellow. C) Red, Green, Blue. D) Yellow, Blue, Green. Show Answer Correct Answer: C) Red, Green, Blue. 16. Branches of physics that studies the heat and other forms of energy, and conversion of energy from one form to another A) Plasma Physics. B) Quantum Physics. C) Atomic and Nuclear Physics. D) Thermodynamics. Show Answer Correct Answer: D) Thermodynamics. 17. The unit for mass is A) G or Kg. B) J. C) J/gC. D) $^\circ C$. Show Answer Correct Answer: A) G or Kg. 18. When a charged object contacts another object (one is usually a conductor), there is a transfer of electrons. How do you determine which object acquires the transferred electrons? A) Always transfer from the bigger to the smaller object, to make it even. B) Transfer is based on the initial charge of the two objects. C) Transfer is based on how much electron affinity that each object has. D) Always transfer from the more negative to the more positive object. Show Answer Correct Answer: D) Always transfer from the more negative to the more positive object. 19. When light bounces back it is ..... A) Reflected. B) Refracted. C) Absorbed. D) Optical Density. Show Answer Correct Answer: A) Reflected. 20. A person shines a light at a friend who is swimming underwater. If the ray in the water (n= 1.333) makes an angle of 36.2 with the normal, what is the angle of incidence? A) 26.4 degrees. B) 2.25 degrees. C) 51.8 degrees. D) Not possible. Show Answer Correct Answer: C) 51.8 degrees. ← PreviousNext →Related QuizzesPhysics QuizzesScience QuizzesPhysics Quiz 1Physics Quiz 2Physics Quiz 3Physics Quiz 4Physics Quiz 5Physics Quiz 6Physics Quiz 7Physics Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books