This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 32 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 32 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The function of graphite in a nuclear reactor is to A) Slow down neutrons. B) Acts as a catalyst. C) Absorb heat produced. D) Conduct electricity. Show Answer Correct Answer: A) Slow down neutrons. 2. A black body can emit thermal radiation depending on its..... A) PressureTekanan. B) Volume I Spadur. C) TemperatureSuhu. D) Light intensity Speed of light. Show Answer Correct Answer: C) TemperatureSuhu. 3. An experiment was carried out to investigate the relationship between the period of a simple pendulum and its length. A brass bob of 50g was used in the experiment. What is the manipulated variable? A) Amplitude. B) Mass of brass bob. C) Length of pendulum. D) Period of the simple pendulum. Show Answer Correct Answer: C) Length of pendulum. 4. The correct equation to calculate average speed is A) Total distance/total time. B) Time/distance. C) Distance x time. D) Distance/time. Show Answer Correct Answer: A) Total distance/total time. 5. A stable well-designed racing car must have A) Low centre of gravity. B) Narrow wheel base. C) Long front. D) Double exhausts. Show Answer Correct Answer: A) Low centre of gravity. 6. J of energy is supplied to a toaster with an efficiency of 25%. What is the useful output of the toaster? A) 200 J. B) 775 J. C) 1000 J. D) None of above. Show Answer Correct Answer: A) 200 J. 7. How long will your trip take (in hours) if you travel 350 km at an average speed of 80 km/hr? A) 80 hours. B) .22 hours. C) 4.38 hours. D) 6. Show Answer Correct Answer: C) 4.38 hours. 8. When plants convert the sun's energy into food, which type of energy is it? A) Kinetic. B) Chemical. C) Thermal. D) Radiant. Show Answer Correct Answer: B) Chemical. 9. Acts between any charged particles, can be attractive (opposite charges), or repulsive (like charges). It has an infinite range and is relatively strong. A) Gravitational. B) Electrostatic. C) Strong nuclear. D) Weak nuclear. Show Answer Correct Answer: B) Electrostatic. 10. Which friction coefficient would most likely describe tape sticking to a wood wall? A) 0.050. B) 0.300. C) 0.600. D) 0.900. Show Answer Correct Answer: D) 0.900. 11. What is an alternating current? A) A current that flows back and forth in a wire. B) A current that always flows in one direction. C) A potential difference that flows back and forth in a wire. D) A potential difference that always flows in one direction. Show Answer Correct Answer: A) A current that flows back and forth in a wire. 12. A radioactive substance has a half-life of 8 days. What is the number of days for the substance to become 25% of the initial value? A) 8 days. B) 12 days. C) 16 days. D) 24 days. Show Answer Correct Answer: C) 16 days. 13. Grounding happens when ..... A) A neutral object comes into contact with another neutral object. B) A charged object is rubbed against another charged object. C) A neutral object touches a MASSIVE conductive object. D) A charged object touches a MASSIVE conductive object. Show Answer Correct Answer: D) A charged object touches a MASSIVE conductive object. 14. Speed equals to ..... A) $ dis\tan ce\ \times time$. B) $ \frac{Dis\tan ce}{Time}$. C) None of the above. D) None of above. Show Answer Correct Answer: B) $ \frac{Dis\tan ce}{Time}$. 15. Which statement about drawing vector is TRUE? A) The vector's length should be proportional to its magnitude. B) You need a vector diagram to solve all physics problems properly. C) A vector is a quantity that has a magnitude but no direction. D) All quantities in physics are vectors. Show Answer Correct Answer: A) The vector's length should be proportional to its magnitude. 16. Two identical wheels, wheel 1 and wheel 2, initially at rest begin to rotate with constant angular accelerations $ \alpha$ . After rotating through the same angular displacement, $ \Delta\theta_0$, the angular velocity of wheel 1 is $ \omega_1$ and the angular velocity of wheel 2 is $ \omega_2=3\omega_1$ . How does the angular acceleration of wheel 2, $ \alpha_2$, compare to the angular acceleration of wheel 1, $ \propto_1$? A) $ \alpha_2=\alpha_1$. B) $ \alpha_2=\frac{\alpha_1}{3}$. C) $ \alpha_2=3\alpha_1$. D) $ \alpha_2=9\alpha_1$. Show Answer Correct Answer: D) $ \alpha_2=9\alpha_1$. 17. MN stands for: A) Micro-newtons. B) Mega-newtons. C) Mili-newtons. D) Mini-newtons. Show Answer Correct Answer: C) Mili-newtons. 18. The units for momentum are A) Kg. B) M/s. C) Kg-m/s. D) Kg/m/s. Show Answer Correct Answer: C) Kg-m/s. 19. The quantitative property that must be transfered to an object to perform work A) Matter. B) Atom. C) Energy. D) Force. Show Answer Correct Answer: C) Energy. 20. An example of an applied science is A) Sociology. B) Biomedical engineering. C) History. D) None of above. Show Answer Correct Answer: B) Biomedical engineering. ← 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