This quiz works best with JavaScript enabled. Home > English Grammar > Grammar > Academic Writing > Reflection – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Reflection Quiz 15 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Triangle ABC is right angled at A with AB=6cm, BC=10cm A circle with centre O has been inscribed inside the triangle.The radius of the incircle is A) 2 cm. B) 3 cm. C) 4cm. D) 1 cm. Show Answer Correct Answer: A) 2 cm. 2. The speed of light in a vacuum is known to be A) Constant universal. B) Universal constant. C) Universal. D) Constant. Show Answer Correct Answer: B) Universal constant. 3. The silver strip on the safety jacket works to reflect the light of the vehicle. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. Which of the following indicators turn red in an acidic solution?i. Phenolphthalein ii. Litmusiii. Turmericiv. Methyl orangeChoose the correct option: A) (i) and (ii). B) (ii) and (iii). C) Only (ii). D) (ii) and (iv). Show Answer Correct Answer: D) (ii) and (iv). 5. A ray of light travelling from glass slab to Air, then the refracted ray bends A) Away from the normal. B) At normal. C) Reflect back to the same medium. D) Towards normal. Show Answer Correct Answer: A) Away from the normal. 6. The coordinates for the origin in the coordinate plane are ..... ? A) (1, 0). B) (1, 1). C) (0, 0). D) (0, 1). Show Answer Correct Answer: C) (0, 0). 7. Light travels in a straight line, this property of light is known as? A) Rectilinear propagation. B) Rectilinear. C) Straight line. D) Propagation. Show Answer Correct Answer: A) Rectilinear propagation. 8. Reciprocal of focal length in meter and its SI unit are A) Principle focus, metre. B) Optic centre, dioptre. C) Magnification of lens, metre. D) Power of lens, Dioptre. Show Answer Correct Answer: D) Power of lens, Dioptre. 9. Which of the following surfaces will produce a clear reflection? A) Rough wooden table. B) Polished metal surface. C) Unpainted wall. D) Frosted glass. Show Answer Correct Answer: B) Polished metal surface. 10. What happens to (-9, 3) when it is translated 4 units down and 3 units right? A) (-13, 6). B) (-5, 6). C) (-6, -1). D) (-6, 7). Show Answer Correct Answer: C) (-6, -1). 11. The optical phenomena, twinkling of stars, is due to A) Total reflection. B) Atmospheric refraction. C) Atmospheric reflection. D) Total refraction. Show Answer Correct Answer: B) Atmospheric refraction. 12. Which rule shows a reflection over the x-axis? A) (x, y) $\rightarrow$ (-x, y). B) (x, y) $\rightarrow$ (x, -y). C) (x, y) $\rightarrow$ (-x, -y). D) Not here. Show Answer Correct Answer: B) (x, y) $\rightarrow$ (x, -y). 13. What is a key word to describe a reflection of a point? A) Look-a-like image. B) Same image. C) Mirror image. D) Twin image. Show Answer Correct Answer: C) Mirror image. 14. When an ordered pair is reflected across the y-axis, what value changes? A) Nothing. B) Y-value. C) X-value. D) None of the above. Show Answer Correct Answer: C) X-value. 15. The original figure prior to a transformation. A) Pre-image. B) Image. C) All the above. D) None of the above. Show Answer Correct Answer: A) Pre-image. 16. What are the coordinates of a point after a reflection over the x-axis? A) (x, y). B) (-x, y). C) (-x, -y). D) (x, -y). Show Answer Correct Answer: D) (x, -y). 17. What is a reflection? A) When you slide an object from one place to another. B) When you resize an object. C) When you turn an object around a point. D) When you flip or mirror an object across a line. Show Answer Correct Answer: D) When you flip or mirror an object across a line. 18. Best regular reflection of light takes place when it strikes A) Rough opaque surface. B) Smooth transparent surface. C) Smooth opaque surface. D) Smooth & silvered opaque surface. Show Answer Correct Answer: D) Smooth & silvered opaque surface. 19. An image that forms when light rays actually meet A) Diffuse reflection. B) Virtual image. C) Real image. D) Regular reflection. Show Answer Correct Answer: C) Real image. 20. A ..... lens makes objects appear smaller and further away. A) Prism. B) Flat. C) Concave. D) Convex. Show Answer Correct Answer: C) Concave. 21. Why can you see most objects? A) They absorb light. B) Light refracts through them. C) Light reflects off them. D) They emit light. Show Answer Correct Answer: C) Light reflects off them. 22. When light falls on a smooth polished surface, most of it A) Is reflected in the same direction. B) Is refracted into the second medium. C) Is reflected in different directions. D) Is scattered. Show Answer Correct Answer: A) Is reflected in the same direction. 23. What is the definition of rotation? A) To make a circular movement around a point. B) To mirror. C) To flip. D) To move up, down, left, or right. Show Answer Correct Answer: A) To make a circular movement around a point. 24. How is light affected by an increase in the index of refraction? A) Its speed decreases. B) Its frequency increases. C) Its speed increases. D) Its frequency decreases. Show Answer Correct Answer: A) Its speed decreases. 25. A plane mirror forms a A) Virtual image. B) Inverted image. C) Real image. D) Magnified image. Show Answer Correct Answer: A) Virtual image. 26. What happens to the speed of light when it reflects off a surface? A) It increases. B) It decreases. C) It remains the same. D) It becomes zero. Show Answer Correct Answer: C) It remains the same. 27. Which of the following characteristics are correct for the image formed in a plane mirror?I. Upright II. InvertedIII. Real IV. Same size as the objectV. Virtual A) I, IV, V. B) I, II, III. C) I, III, IV. D) III, IV, V. Show Answer Correct Answer: A) I, IV, V. 28. When a figure is translated down what happens? A) You subtract from the y-value. B) You add to the x-value. C) You add to the y-value. D) You subtract from the x-value. Show Answer Correct Answer: A) You subtract from the y-value. 29. A point is reflected over the x-axis. What coordinate changes? A) X-coordinate. B) Y-coordinate. C) All the above. D) None of the above. Show Answer Correct Answer: B) Y-coordinate. 30. What is the angle of reflection? A) The angle formed between the normal and the surface. B) The and formed between the incident ray and the normal. C) The angle formed between the incident ray and the reflected ray. D) The angle between the normal and the reflected ray. Show Answer Correct Answer: D) The angle between the normal and the reflected ray. ← PreviousNext →Related QuizzesGrammar QuizzesEnglish Grammar QuizzesReflection Quiz 1Reflection Quiz 2Reflection Quiz 3Reflection Quiz 4Reflection Quiz 5Reflection Quiz 6Reflection Quiz 7Reflection Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books