✅ EKITI PHYSICS OBJECTIVE ANSWERS 01. (a) kg 02. (a) ampere 03. (c) micrometer screw gauge 04. (c) micrometer screw gauge 05. (b) MLT⁻² 06. (b) 0.1cm 07. (a) sec 08. (a) regular (periodic) 09. (b) distance 10. (a) friction 11. (e) All of the above 12. (e) All of the above 13. (a) translational 14. (b) U²sin2θ/g 15. (a) Person walking on a slope 16. (d) 50m 17. (d) 250J 18. (c) 100m/s 19. (b) 10m/s 20. (c) 38000kg/m³ 21. (a) conduction 22. (b) radiation 23. (a) 48N 24. (a) equal and opposite 25. (d) velocity 26. (c) 3s 27. (b) vector 28. (b) 60cm/s 29. (a) 0.1N 30. (b) 40N 31. (b) inertia 32. (d) air resistance on the bullet 33. (a) 250Ns 34. (b) 324cm³ 35. (c) 2.5 36. (a) 5:1 37. (b) Hygrometer 38. (b) doubled 39. (a) frequencies 40. (d) polarization 41. (b) diffraction 42. (a) real 43. (b) film 44. (c) 7.3 45. (d) convex lens 46. (c) short sight 47. (d) solids and liquids 48. (a) 140N 49. (c) 2.5 × 10⁻³ 50. (b) dispersion SECTION B 1a. l Motion is the change in position of an object with respect to time. 1b. State four parameters from which the motion of an object can be described: • Displacement • Velocity • Acceleration • Time 2a. Temperature is the measure of the average kinetic energy of particles in a substance. 2b. Because clinical thermometers contain mercury, which expands and could burst the thermometer when exposed to high temperatures like boiling water. 3a. Power is the rate at which work is done or energy is transferred. 3b. • Force applied • Distance moved • Time taken to do work 4a. A shadow is a dark area or shape produced by an object blocking the path of light. 4b. 1. Umbra: The darkest part of a shadow where all light is blocked. 2. Penumbra: The lighter part of a shadow where light is partially blocked. 5b. Young’s modulus is the ratio of stress to strain in a material within the limit of elasticity. 5c. State the physical quantities one has to measure in order to determine Young’s modulus: • Force applied • Extension produced • Original length of material • Cross-sectional ar