This quiz works best with JavaScript enabled. Home > 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. Which of the following is an example of a figure that has undergone a reflection? A) Circle. B) Triangle. C) Number '7'. D) Letter 'D'. Show Answer Correct Answer: D) Letter 'D'. 2. If a man wishes to use a plane mirror on a wall to view both his head and his feet as he stands in front of the mirror, the required length of the mirror A) Is equal to the height of the man. B) Is equal to one half the height of the man. C) Is equal to double the height of the man. D) Depends on the distance the man stands from the mirror. Show Answer Correct Answer: B) Is equal to one half the height of the man. 3. Which is the correct algebraic representation for a reflection across the y-axis? A) (x, y) $\rightarrow$ (-x, y ). B) (x, y) $\rightarrow$ ( x, y ). C) (x, y) $\rightarrow$ ( x, -y ). D) None of the above. Show Answer Correct Answer: A) (x, y) $\rightarrow$ (-x, y ). 4. A reflection over the $y-axis$ A) Change the sign of the y-coordinate while the sign for the x-coordinate stays the same. B) Change the sign of the x-coordinate while the sign for the y-coordinate stays the same. C) Change the sign for both the x and the y-coordinates. D) Nothing will change. Show Answer Correct Answer: B) Change the sign of the x-coordinate while the sign for the y-coordinate stays the same. 5. The sun in the early morning can cause buildings to form shadows. This shadow will be: A) Long. B) Fat. C) Thin. D) Short. Show Answer Correct Answer: A) Long. 6. A transformation that flips each point of a shape over the same line is called a ..... A) Translation. B) Rotation. C) Reflection. D) Transformation. Show Answer Correct Answer: C) Reflection. 7. An object is 100 mm in front of a concave mirror which produces an upright image (erect image). The radius of curvature of the mirror is: A) Less than 100 mm. B) Between 100 mm and 200 mm. C) Exactly 200 mm. D) More than 200 mm. Show Answer Correct Answer: D) More than 200 mm. 8. Focal length of convex lens is 15 cm, it's radius of curvature Will be A) 40 cm. B) 15 cm. C) 30 cm. D) 60 cm. Show Answer Correct Answer: C) 30 cm. 9. Describe the translation of Point A (3, -8) to A'(-4, -5). A) (x-4, y-5). B) (x+7, y-3). C) (x-7, y+3). D) (x-3, y+7). Show Answer Correct Answer: C) (x-7, y+3). 10. 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) 4cm. B) 3 cm. C) 2 cm. D) 1 cm. Show Answer Correct Answer: C) 2 cm. 11. The speed of light in a vacuum is known to be A) Universal. B) Constant. C) Universal constant. D) Constant universal. Show Answer Correct Answer: C) Universal constant. 12. 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. 13. 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). 14. A ray of light travelling from glass slab to Air, then the refracted ray bends A) Towards normal. B) At normal. C) Away from the normal. D) Reflect back to the same medium. Show Answer Correct Answer: C) Away from the normal. 15. The coordinates for the origin in the coordinate plane are ..... ? A) (1, 1). B) (0, 0). C) (0, 1). D) (1, 0). Show Answer Correct Answer: B) (0, 0). 16. Light travels in a straight line, this property of light is known as? A) Rectilinear propagation. B) Straight line. C) Rectilinear. D) Propagation. Show Answer Correct Answer: A) Rectilinear propagation. 17. Reciprocal of focal length in meter and its SI unit are A) Magnification of lens, metre. B) Power of lens, Dioptre. C) Principle focus, metre. D) Optic centre, dioptre. Show Answer Correct Answer: B) Power of lens, Dioptre. 18. 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. 19. What happens to (-9, 3) when it is translated 4 units down and 3 units right? A) (-6, -1). B) (-13, 6). C) (-5, 6). D) (-6, 7). Show Answer Correct Answer: A) (-6, -1). 20. The optical phenomena, twinkling of stars, is due to A) Atmospheric reflection. B) Total reflection. C) Atmospheric refraction. D) Total refraction. Show Answer Correct Answer: C) Atmospheric refraction. 21. 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: C) (x, y) $\rightarrow$ (x, -y). 22. 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. 23. 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. 24. 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. 25. 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: A) (x, -y). 26. What is a reflection? A) When you turn an object around a point. B) When you slide an object from one place to another. C) When you flip or mirror an object across a line. D) When you resize an object. Show Answer Correct Answer: C) When you flip or mirror an object across a line. 27. Best regular reflection of light takes place when it strikes A) Smooth opaque surface. B) Rough opaque surface. C) Smooth transparent surface. D) Smooth & silvered opaque surface. Show Answer Correct Answer: D) Smooth & silvered opaque surface. 28. An image that forms when light rays actually meet A) Virtual image. B) Real image. C) Diffuse reflection. D) Regular reflection. Show Answer Correct Answer: B) Real image. 29. A ..... lens makes objects appear smaller and further away. A) Convex. B) Concave. C) Prism. D) Flat. Show Answer Correct Answer: B) Concave. 30. Why can you see most objects? A) They emit light. B) Light refracts through them. C) Light reflects off them. D) They absorb light. Show Answer Correct Answer: C) Light reflects off them. ← PreviousNext →Related QuizzesGrammar QuizzesReflection Quiz 1Reflection Quiz 2Reflection Quiz 3Reflection Quiz 4Reflection Quiz 5Reflection Quiz 6Reflection Quiz 7Reflection Quiz 8Reflection Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books