This quiz works best with JavaScript enabled. Home > Science > Physics > Physics – Quiz 39 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 39 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Energy Initial = Energy Final A) Yes. B) No. C) It depends. D) None of above. Show Answer Correct Answer: A) Yes. 2. What size resistor would produce a 3 Amp current flow with a 12 Volt battery A) 1 Ohm. B) 3 Ohms. C) 4 Ohms. D) 12 Ohms. Show Answer Correct Answer: C) 4 Ohms. 3. The kind of image formed by a plane mirror A) Virtual. B) Real. C) Erect or upright. D) Inverted. Show Answer Correct Answer: A) Virtual. 4. It is a stored energy in an object that can be transformed into kinetic energy. A) KINETIC ENERGY. B) GRAVITATIONAL ENERGY. C) INTERNAL ENERGY. D) POTENTIAL ENERGY. Show Answer Correct Answer: D) POTENTIAL ENERGY. 5. The x-component, which is usually the horizontal component of a vector and is adjacent to the angle given, is always related to what trigonometric function? A) Cosine. B) Tangent. C) Cotangent. D) Sine. Show Answer Correct Answer: A) Cosine. 6. Acceleration is negative if speed is A) Constant. B) Decreasing. C) Increasing. D) Neither increasing nor decreasing. Show Answer Correct Answer: A) Constant. 7. Dimensional formula of density is A) [M1L2T0]. B) [M1L-3T0]. C) [M1L1T0]. D) None of above. Show Answer Correct Answer: B) [M1L-3T0]. 8. With an increase in pressure the melting point of max will A) Increase. B) Decrease. C) Remain Unaffected. D) First increase and then decrease. Show Answer Correct Answer: A) Increase. 9. When light travelling in a certain medium falls on the surface of another medium, a part of it turns back in the same medium. This phenomenon is called A) Refraction. B) Reflection. C) Defraction. D) Scattering. Show Answer Correct Answer: B) Reflection. 10. Isotopes of an element contain A) Equal number of nucleons. B) Equal number of protons and electrons. C) The same number of protons but different number of neutrons. D) The same number of neutrons but different number of protons. Show Answer Correct Answer: C) The same number of protons but different number of neutrons. 11. Which one is the closest approximate of the speed of gamma ray in air? A) 300 000 000 m/s. B) 300 m/s. C) 300 000 m/s. D) 3 000 000 m/s. Show Answer Correct Answer: A) 300 000 000 m/s. 12. How many centimeters in one meter? A) 100 centimeters. B) 1000 centimeters. C) 10 centimeters. D) 5 centimeters. Show Answer Correct Answer: A) 100 centimeters. 13. Light from the Sun reaches us in nearly A) 2 minutes. B) 4 minutes. C) 8 minutes. D) 16 minutes. Show Answer Correct Answer: C) 8 minutes. 14. A student is taking some measurements. Which measurement is taken directly using a micrometer screw gauge? A) 0.52 g /mm2. B) 0.52 g /mm3. C) 0.52 mm. D) 0.52 mm2. Show Answer Correct Answer: C) 0.52 mm. 15. Kicking a football is an example of which law of motion? A) First. B) Second. C) Third. D) Fourth. Show Answer Correct Answer: A) First. 16. You push a 10 kg cart and it accelerates at 2 m/s2. What force did you push with? A) 2 Newtons. B) 5 Newtons. C) 10 Newtons. D) 20 Newtons. Show Answer Correct Answer: D) 20 Newtons. 17. A 9 kg blob moving at 5 m/s collides and sticks to a second blob with a mass of 5 kg. If the two bobs stick together, what will the velocity of the two blobs move at? A) 3.57 m/s. B) 3.2 m/s. C) 10.0 m/s. D) 9.0 m/s. Show Answer Correct Answer: B) 3.2 m/s. 18. In a thermally isolated system, the amount of heat lost is ..... the amount of heat gained. A) Equal to. B) Greater than. C) Lesser than. D) More information is needed. Show Answer Correct Answer: A) Equal to. 19. What is the rotational kinetic energy of the cylinder at t = 2 s? A) 2.0J. B) 2.5J. C) 5.0J. D) It cannot be determined without knowing the radius. Show Answer Correct Answer: A) 2.0J. 20. Rainbow is due to A) Ionisation of water deposits. B) Diffusion of sunlight through water droplets. C) Absorption of sunlight in minute water droplets. D) Refraction and reflection of sunlight by water droplets. Show Answer Correct Answer: D) Refraction and reflection of sunlight by water droplets. ← PreviousNext →Related QuizzesScience QuizzesPhysics Quiz 1Physics Quiz 2Physics Quiz 3Physics Quiz 4Physics Quiz 5Physics Quiz 6Physics Quiz 7Physics Quiz 8Physics Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books