This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 46 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 46 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following systems transforms chemical energy to light energy? A) Fan. B) Lamp. C) Compass. D) Burning a candle. Show Answer Correct Answer: D) Burning a candle. 2. Area of physics that deals with the bahavior of objects and systems in response to various forces. A) Acoustics. B) Mechanics. C) Thermodynamics. D) Optics. Show Answer Correct Answer: B) Mechanics. 3. What makes a compass work? A) Magnetism. B) Gravity. C) Batteries. D) Friction. Show Answer Correct Answer: A) Magnetism. 4. The force required to move a chair 4 meters is 3 newtons how much work is done A) 10 J. B) 12 J. C) 10 N. D) 12 N. Show Answer Correct Answer: B) 12 J. 5. The rate at which an object's velocity changes A) Acceleration. B) Speed. C) F= MA. D) Inertia. Show Answer Correct Answer: A) Acceleration. 6. Latent heat is A) The heat absorbed or released at a boiling process during a change of phase. B) The heat absorbed or released at a constant temperature during a change of phase. C) The heat absorbed or released at a constant temperature during a change of phase of 1 kg object. D) The heat absorbed or released by an object to increase or decrease its temperature by 1 degree Celcius. Show Answer Correct Answer: B) The heat absorbed or released at a constant temperature during a change of phase. 7. Speedometer is used to measure ..... of the vehicle A) Distance. B) Density. C) Time. D) Speed. Show Answer Correct Answer: D) Speed. 8. SI unit for force A) Joules. B) Watts. C) Newtons. D) Meters. Show Answer Correct Answer: C) Newtons. 9. Thermal Energy required for a change of state is given by ..... A) Mass / specific latent heat. B) Mass x specific latent heat. C) Mass / specific heat capacity. D) Mass x specific heat capacity. Show Answer Correct Answer: B) Mass x specific latent heat. 10. What is the work done when 5 N of force is applied for 20 m in 10 s? A) 10 J. B) 100 J. C) 1000 J. D) 2.5 J. Show Answer Correct Answer: B) 100 J. 11. A scientist is feeling sick and knows that if her temperature is a degree or more above 37.5$^ \circ$C she should go home from work. But all she has is a thermometer graduated in kelvin. What temperature does the thermometer need to be? A) 194.5 K. B) 310.5 K. C) 311.5 K. D) 325.5 K. Show Answer Correct Answer: C) 311.5 K. 12. In a series of reactions, two deuterons combine to form a helium nucleus. What is the name of this process? A) Chain reaction. B) Nuclear reaction. C) Nuclear fission. D) Nuclear fusion. Show Answer Correct Answer: D) Nuclear fusion. 13. What effect does tightning the string of a guitar have on the sound? A) The frequency is decreased. B) The frequency is increased. C) The amplitude is decreased. D) The amplitude is increased. Show Answer Correct Answer: B) The frequency is increased. 14. Precision describes A) Human error. B) The relationship of a measurement to an accepted standard. C) The limitations of the measuring instrument. D) The lack of instrument calibration. Show Answer Correct Answer: C) The limitations of the measuring instrument. 15. A wave has a frequency of 100Hz and a wavespeed of 200m/s. What is the wavelength of the wave? A) 1m. B) 2m. C) 100m. D) 20000m. Show Answer Correct Answer: B) 2m. 16. According to the scientific method, why does a physicist make observations and collect data? A) To decide which parts of a problem are important. B) To ask a question. C) To make an interpretation. D) To solve all problems. Show Answer Correct Answer: B) To ask a question. 17. Whether an object will sink or float in a fluid is determined by A) Pascal's principle. B) Charles's law. C) Bernoulli's principle. D) Archimedes' principle. Show Answer Correct Answer: D) Archimedes' principle. 18. Which equation will you use if you are given the values of u, v and a to find distance? A) First eq of motion. B) Second eq of motion. C) Third eq Motion. D) Insufficient data. Show Answer Correct Answer: C) Third eq Motion. 19. A box takes 40 N to start moving when the coefficient of static friction is .54. What is the weight of the box? A) 81 N. B) 18 N. C) 98 N. D) 74 N. Show Answer Correct Answer: D) 74 N. 20. What are the two types of Mechanical Energy? A) Elastic and Kinetic. B) Thermal and Potential. C) Potential and Chemical. D) Kinetic and Potential. Show Answer Correct Answer: D) Kinetic and Potential. ← 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