Unity Lighting Quiz - Practice Questions PDF

Unity Lighting 1. What is the default lighting mode in Unity? a) Mixed b) Baked c) Realtime d) Shadowmask Answer: c) Realtime 2. Which of the following lighting types is not available in Unity? a) Directional Light b) Ambient Light c) Point Light d) Spotlight Answer: b) Ambient...

Unity Lighting 1. What is the default lighting mode in Unity? a) Mixed b) Baked c) Realtime d) Shadowmask Answer: c) Realtime 2. Which of the following lighting types is not available in Unity? a) Directional Light b) Ambient Light c) Point Light d) Spotlight Answer: b) Ambient Light 3. What does the "Global Illumination" setting control in Unity? a) Only Direct Lighting b) Both Direct and Indirect Lighting c) Shadows Only d) Specular Reflections Answer: b) Both Direct and Indirect Lighting 4. Which component is responsible for baking lighting in Unity? a) Camera b) Light Probes c) Lightmapper d) Occlusion Culling Answer: c) Lightmapper 5. Which type of light is used to simulate the sun in outdoor environments? a) Point Light b) Spot Light c) Directional Light d) Area Light Answer: c) Directional Light 6. What does "Lightmap Static" do in Unity? a) Disables realtime lighting for an object b) Marks the object to receive only baked lighting c) Prevents the object from casting shadows d) Allows the object to move during runtime Answer: b) Marks the object to receive only baked lighting 7. What type of shadow is cast by a Point Light? a) Hard shadows only b) Soft shadows only c) Omnidirectional shadows d) No shadows at all Answer: c) Omnidirectional shadows 8. In Unity, which light is ideal for lighting a street lamp? a) Directional Light b) Spot Light c) Point Light d) Area Light Answer: b) Spot Light 9. Which option controls the range of a Point Light? a) Intensity b) Range c) Angle d) Bounce Answer: b) Range 10. What does the "Ambient Light" setting adjust? a) Direct Light color b) Indirect Light color c) Shadows only d) Reflections only Answer: b) Indirect Light color 11. What is the purpose of Light Probes in Unity? a) To enhance realtime reflections b) To calculate global illumination in dynamic objects c) To prevent shadows on dynamic objects d) To create dynamic lighting for static objects Answer: b) To calculate global illumination in dynamic objects 12. Which setting in Unity can be used to change the softness of a shadow? a) Shadow Distance b) Shadow Bias c) Shadow Strength d) Shadow Resolution Answer: c) Shadow Strength 13. In Unity, what does the "Indirect Multiplier" do in a light component? a) Adjusts the amount of direct lighting b) Controls the intensity of indirect lighting c) Controls the range of the light source d) Affects the sharpness of shadows Answer: b) Controls the intensity of indirect lighting 14. Which Unity feature helps reduce lightmap size by using fewer resources for distant objects? a) Occlusion Culling b) LOD (Level of Detail) c) Shadowmask d) Light Probes Answer: b) LOD (Level of Detail) 15. Which light type supports shadows and reflections in realtime? a) Point Light b) Directional Light c) Area Light d) Emissive Light Answer: b) Directional Light 16. What is the function of a Reflection Probe? a) To calculate how lights are reflected in the scene b) To create realtime shadows for dynamic objects c) To calculate global illumination for static objects d) To calculate screenspace ambient occlusion Answer: a) To calculate how lights are reflected in the scene 17. Which light type is suitable for simulating indoor light bulbs? a) Spot Light b) Directional Light c) Point Light d) Area Light Answer: c) Point Light 18. What does the "Realtime Global Illumination" setting in Unity affect? a) Dynamic lighting based on realtime light sources b) Static lighting calculations during baking c) Reflections only d) Shadow mapping for directional lights Answer: a) Dynamic lighting based on realtime light sources  19. In Unity, which lighting technique reduces performance impact by combining baked and realtime lighting? a) Baked Lighting b) Mixed Lighting c) Realtime Lighting d) Ambient Lighting Answer: b) Mixed Lighting 20. How can you adjust the falloff of light in Unity? a) Through the Intensity setting b) Through the Range setting c) Through the Shadow Bias setting d) By adjusting the Reflection Probe Answer: b) Through the Range setting 21. What does Unity's "Shadowmask" lighting mode allow? a) Realtime shadows for all objects b) Mixed shadows combining baked and realtime c) No shadows at all d) Only baked shadows Answer: b) Mixed shadows combining baked and realtime 22. What is the purpose of the "Bounce Intensity" setting in Unity lights? a) Controls how much light bounces off surfaces b) Adjusts the brightness of direct light c) Changes the distance light travels d) Controls the softness of shadows Answer: a) Controls how much light bounces off surfaces 23. Which Unity lighting component is necessary for creating reflections on dynamic objects? a) Light Probe b) Reflection Probe c) Directional Light d) Skybox Answer: b) Reflection Probe 24. In Unity, what is the main benefit of Baked Global Illumination? a) Dynamic lighting during runtime b) Precalculated lighting for improved performance c) Realtime reflections d) Accurate realtime shadow rendering Answer: b) Precalculated lighting for improved performance 25. What kind of lighting does an "Area Light" simulate in Unity? a) A light with no shadows b) A light with a defined range and radius c) A large surface emitting soft, diffuse light d) A narrow beam like a flashlight Answer: c) A large surface emitting soft, diffuse light 26. Which of the following is not affected by Light Probes? a) Dynamic objects b) Static objects c) Indirect lighting d) Bounced light Answer: b) Static objects 27. What is "Ambient Occlusion" in Unity used for? a) To enhance brightness in the scene b) To darken creases, holes, and intersections in geometry c) To simulate the scattering of light on surfaces d) To improve the performance of realtime lighting Answer: b) To darken creases, holes, and intersections in geometry 28. Which light type would be ideal for a flashlight effect in Unity? a) Point Light b) Area Light c) Spot Light d) Directional Light Answer: c) Spot Light 29. What does the "Culling Mask" setting in a light component do? a) Controls which objects are affected by the light b) Adjusts the range of the light c) Changes the light's color d) Modifies how shadows are rendered Answer: a) Controls which objects are affected by the light 30. Which is a feature of the "Mixed Lighting" mode in Unity? a) Shadows are only realtime b) Lighting is fully prebaked c) Combines baked direct light with realtime shadows d) Lights are only dynamic at runtime Answer: c) Combines baked direct light with realtime shadows 31. What is the maximum range of a Point Light in Unity? a) 10 units b) 50 units c) 100 units d) Infinity Answer: d) Infinity 32. How does Unity's "Lighting Explorer" help during lightmap creation? a) It shows the performance cost of realtime lighting b) It previews baked lighting before applying it c) It provides an overview of all lights and their properties in the scene d) It creates lightmaps for specific objects in isolation Answer: c) It provides an overview of all lights and their properties in the scene 33. What is the purpose of using "Lightmap UVs" in Unity? a) To control how shadows are cast on an object b) To optimize texture mapping for lighting c) To apply postprocessing effects d) To adjust the range of a Point Light Answer: b) To optimize texture mapping for lighting 34. Which light in Unity is most appropriate for simulating a large area of indirect sunlight coming through a window? a) Point Light b) Directional Light c) Area Light d) Spot Light Answer: c) Area Light 35. What effect does increasing "Shadow Bias" have in Unity? a) Softens the shadows b) Reduces shadow acne artifacts c) Increases shadow resolution d) Lengthens the shadow distance Answer: b) Reduces shadow acne artifacts 36. Which Unity lighting mode combines realtime lighting with baked global illumination? a) Shadowmask b) Baked lighting only c) Realtime only d) Mixed lighting Answer: d) Mixed lighting 37. In Unity, how does a Skybox affect lighting? a) It adds ambient lighting to the scene b) It prevents light from bouncing c) It removes directional shadows d) It only affects reflections Answer: a) It adds ambient lighting to the scene 38. Which light setting controls how far a shadow is cast? a) Range b) Intensity c) Shadow Distance d) Bounce Intensity Answer: c) Shadow Distance 39. What is the purpose of "Light Layers" in Unity's Universal Render Pipeline (URP)? a) To control which objects are affected by certain lights b) To determine the range of a light c) To increase shadow resolution d) To create dynamic reflections Answer: a) To control which objects are affected by certain lights 40. What is a drawback of using realtime lights in Unity? a) They have a higher performance cost than baked lights b) They can't cast shadows c) They only work with Point Lights d) They don't support global illumination Answer: a) They have a higher performance cost than baked lights 41. Which Unity feature allows a light source to affect only specific objects in the scene? a) Lightmap UV b) Culling Mask c) Lightmap Static d) Occlusion Culling Answer: b) Culling Mask 42. What does increasing the "Indirect Intensity" in Unity's lighting settings do? a) Makes shadows softer b) Increases the brightness of bounced light c) Reduces direct lighting d) Extends the range of the light Answer: b) Increases the brightness of bounced light 43. What is the purpose of the "AutoGenerate Lighting" option in Unity's Lighting settings? a) Automatically adjusts the brightness of the scene b) Continuously updates baked lighting when changes are made c) Adjusts light intensity based on the time of day d) Precalculates lighting at the start of the game Answer: b) Continuously updates baked lighting when changes are made 44. What happens if you set the "Mode" of a light to "Baked" in Unity? a) The light will only affect static objects b) The light will only affect dynamic objects c) The light's effects will be precalculated and not change during runtime d) The light will only affect realtime reflections Answer: c) The light's effects will be precalculated and not change during runtime 45. Which Unity light type casts shadows in a straight line and is typically used for sunlight? a) Point Light b) Spot Light c) Directional Light d) Area Light Answer: c) Directional Light 46. Which Unity component should be used to improve lighting for moving objects in baked lightmaps? a) Light Probes b) Reflection Probes c) Skybox d) HDRI Answer: a) Light Probes 47. What does "Shadow Resolution" adjust in Unity? a) The size of shadows b) The sharpness of shadows c) The distance shadows are cast d) The number of shadows a light can cast Answer: b) The sharpness of shadows 48. What lighting component would you use to add reflection to a reflective surface, such as a mirror or water? a) Point Light b) Reflection Probe c) Spot Light d) Directional Light Answer: b) Reflection Probe 49. Which light type supports light baking in Unity? a) Spot Light b) Area Light c) Point Light d) All of the above Answer: d) All of the above 50. What effect does increasing the "Bounce Intensity" on a light in Unity have? a) It increases the number of shadows b) It increases the intensity of indirect light reflections c) It changes the color of the light d) It affects the shadow range Answer: b) It increases the intensity of indirect light reflections 51. How can you disable shadows for a particular light in Unity? a) Set Shadow Type to "None" b) Set Intensity to 0 c) Set the Mode to "Realtime" d) Set Range to 0 Answer: a) Set Shadow Type to "None" 52. Which Unity feature is used to simulate how light interacts with smallscale surface details? a) Normal Maps b) Reflection Probes c) Shadow Cascades d) Light Probes Answer: a) Normal Maps 53. What does increasing the "Indirect Bounce Factor" in Unity do? a) It increases the number of shadows b) It enhances the amount of light that reflects off surfaces c) It sharpens the shadows d) It changes the direction of the light Answer: b) It enhances the amount of light that reflects off surfaces 54. Which Unity tool is used to preview the results of lighting in the editor without running the game? a) Play Mode b) Scene View c) Lighting Explorer d) Shader Graph Answer: c) Lighting Explorer 55. What does the "Refl Probes" option do in Unity's Lighting settings? a) Bakes reflections from light sources b) Determines the strength of reflection probes c) Reflects ambient light into the scene d) Casts shadows from reflective surfaces Answer: b) Determines the strength of reflection probes 56. Which lighting mode provides the best performance for mobile devices in Unity? a) Realtime Lighting b) Mixed Lighting c) Baked Lighting d) Shadowmask Answer: c) Baked Lighting 57. What is "Shadow Cascades" used for in Unity? a) To split shadow rendering into multiple layers to improve quality b) To increase the intensity of shadows c) To bake shadows at different resolutions d) To generate shadows only for dynamic objects Answer: a) To split shadow rendering into multiple layers to improve quality 58. Which Unity light type emits light equally in all directions? a) Directional Light b) Point Light c) Spot Light d) Area Light Answer: b) Point Light 59. How does the "Skybox" affect lighting in Unity scenes? a) It only affects direct light b) It affects ambient light and reflections c) It only impacts baked lighting d) It disables shadows Answer: b) It affects ambient light and reflections 60. What setting would you change to make shadows softer in Unity? a) Shadow Bias b) Shadow Resolution c) Shadow Type d) Shadow Strength Answer: d) Shadow Strength 61. What is the primary purpose of Light Probes in Unity? a) To create realtime reflections b) To bake shadows for static objects c) To calculate indirect lighting for dynamic objects d) To calculate the intensity of realtime lights Answer: c) To calculate indirect lighting for dynamic objects 62. Which light mode in Unity allows for both baked and realtime lighting to coexist? a) Mixed b) Baked c) Realtime d) Shadowmask Answer: a) Mixed 63. Which Unity feature is used to control how much light is emitted from surfaces with emissive materials? a) Lightmap UVs b) Global Illumination c) Emissive Intensity d) Reflection Probes Answer: c) Emissive Intensity 64. What is the function of "Lightmap Resolution" in Unity? a) It controls the distance at which shadows are cast b) It determines the resolution of baked lightmaps c) It adjusts the intensity of direct lighting d) It increases the brightness of realtime lighting Answer: b) It determines the resolution of baked lightmaps 65. In Unity, which light component casts shadows that are parallel to each other? a) Point Light b) Directional Light c) Spot Light d) Area Light Answer: b) Directional Light 66. Which Unity light type works best for simulating indoor light bulbs? a) Area Light b) Point Light c) Directional Light d) Spot Light Answer: b) Point Light 67. What does "Shadow Near Plane" adjust in Unity's lighting settings? a) How close shadows appear to the camera b) How far shadows are cast from a light source c) How sharp shadows appear d) The brightness of the shadows Answer: a) How close shadows appear to the camera 68. Which lighting mode in Unity has the highest performance cost during runtime? a) Baked Lighting b) Mixed Lighting c) Realtime Lighting d) Shadowmask Answer: c) Realtime Lighting 69. What does the "Light Probe Group" component in Unity do? a) Controls reflection behavior b) Defines positions where Light Probes are placed c) Adjusts the intensity of Point Lights d) Bakes shadows for dynamic objects Answer: b) Defines positions where Light Probes are placed 70. What is the default color of the ambient light in Unity if no Skybox is applied? a) White b) Gray c) Black d) Blue Answer: c) Black 71. What does the "Refl Intensity" setting in Unity control? a) The brightness of ambient light b) The intensity of realtime reflections c) The strength of shadow casting d) The range of Point Lights Answer: b) The intensity of realtime reflections 72. Which Unity component is used to reduce lightmap artifacts on lowpolygon models? a) Normal Maps b) Lightmap UVs c) Light Probes d) Reflection Probes Answer: b) Lightmap UVs 73. How can you achieve realistic lighting for outdoor scenes in Unity? a) Use multiple Point Lights b) Use a Directional Light and set a Skybox c) Use only baked lighting d) Disable global illumination Answer: b) Use a Directional Light and set a Skybox 74. What is the primary use of "Shadowmask" mode in Unity's lighting settings? a) To blend realtime shadows with baked shadows b) To disable shadows entirely c) To increase shadow resolution d) To control the softness of realtime shadows Answer: a) To blend realtime shadows with baked shadows 75. What is the purpose of the "Bounce Intensity" setting in Unity lighting? a) To adjust the range of a light b) To increase the brightness of indirect light c) To create harder shadows d) To cast light in multiple directions Answer: b) To increase the brightness of indirect light 76. Which Unity light type is best suited for simulating the headlights of a car? a) Spot Light b) Point Light c) Area Light d) Directional Light Answer: a) Spot Light 77. Which setting in Unity can reduce the "peter panning" effect in shadows? a) Shadow Bias b) Shadow Distance c) Shadow Resolution d) Indirect Multiplier Answer: a) Shadow Bias 78. In Unity, what happens when the "Realtime Global Illumination" option is enabled? a) Only baked lights are used b) Global illumination is calculated in realtime c) Only direct lighting is applied d) Shadows are disabled Answer: b) Global illumination is calculated in realtime 79. What does the "Intensity Multiplier" control in Unity’s lighting settings? a) The number of shadows cast by a light b) The brightness of the entire scene c) The intensity of all lights in the scene d) The range of realtime lights Answer: c) The intensity of all lights in the scene 80. What is the purpose of Unity’s "Precomputed Realtime GI"? a) It precomputes static lighting for faster performance b) It enables realtime global illumination for dynamic lighting c) It creates baked shadows for dynamic objects d) It adjusts the light range based on distance Answer: b) It enables realtime global illumination for dynamic lighting 81. Which Unity component improves the look of dynamic objects in a baked scene? a) Reflection Probes b) Light Probes c) Area Lights d) Spot Lights Answer: b) Light Probes 82. What is the maximum number of cascades available in Unity’s Shadow Cascades setting? a) 1 b) 2 c) 3 d) 4 Answer: d) 4 83. Which feature in Unity is essential for lighting large outdoor environments? a) Light Probes b) Directional Light c) Area Light d) Spot Light Answer: b) Directional Light 84. In Unity, what does the "Sample Count" setting in a light source control? a) The number of rays cast for shadows b) The number of light bounces in the scene c) The amount of shadow softness d) The light's overall intensity Answer: a) The number of rays cast for shadows 85. Which Unity lighting feature adjusts the color and intensity of shadows? a) Reflection Probes b) Light Probes c) Shadow Bias d) Ambient Occlusion Answer: d) Ambient Occlusion 86. What does "HDR" in Unity lighting stand for? a) High Dynamic Reflection b) High Direct Reflection c) High Dynamic Range d) High Definition Rendering Answer: c) High Dynamic Range 87. What does adjusting "Lightmap Padding" do in Unity? a) Increases the distance between baked lightmaps b) Increases the range of shadows c) Sharpens the edges of shadows d) Controls the resolution of the lightmap Answer: a) Increases the distance between baked lightmaps 88. What does the "Light Explorer" window in Unity provide? a) A preview of realtime lighting b) A list of all lights in the scene and their properties c) A view of lightmap UVs d) A preview of dynamic shadows Answer: b) A list of all lights in the scene and their properties 89. Which Unity lighting mode offers the highest performance optimization for static objects? a) Realtime Lighting b) Mixed Lighting c) Baked Lighting d) Indirect Lighting Answer: c) Baked Lighting 90. How does increasing "Shadow Distance" in Unity impact performance? a) It improves performance by rendering shadows closer to the camera b) It decreases performance by rendering shadows at greater distances c) It reduces the brightness of shadows d) It improves the resolution of shadows Answer: b) It decreases performance by rendering shadows at greater distances 91. Which Unity lighting option helps reduce performance costs for highquality reflections? a) Realtime Lighting b) Reflection Probes with baked mode c) Directional Light with Realtime Shadows d) Increasing the Shadow Bias Answer: b) Reflection Probes with baked mode 92. What is the use of "Final Gather" in Unity's baked GI settings? a) To increase the speed of baking lightmaps b) To improve the quality of indirect light by adding an additional raytraced pass c) To reduce the amount of light bounces d) To decrease lightmap resolution for performance Answer: b) To improve the quality of indirect light by adding an additional raytraced pass 93. What does setting a light to "Auto" in Unity’s Mixed Lighting mode do? a) It switches between baked and realtime lighting based on the scene b) It calculates shadows in realtime c) It generates reflections automatically d) It allows Unity to decide which lights should be baked or realtime Answer: d) It allows Unity to decide which lights should be baked or realtime 94. What does the "Shadow Bias" setting adjust in Unity? a) The color of the shadows b) The brightness of shadows c) The distance at which shadows start appearing d) The sharpness of shadows Answer: c) The distance at which shadows start appearing 95. In Unity, what is "Ambient Light" used for? a) To illuminate objects that are in direct light b) To provide lighting for objects not directly illuminated by other lights c) To increase shadow sharpness d) To control the brightness of emissive objects Answer: b) To provide lighting for objects not directly illuminated by other lights 96. What does "Global Illumination" in Unity calculate? a) Only the intensity of realtime lights b) How light bounces and reflects off surfaces c) The range of Point Lights d) The position of shadows Answer: b) How light bounces and reflects off surfaces 97. What does enabling "Multiple Importance Sampling" in Unity's lighting settings do? a) It enhances the sampling quality for specular reflections b) It increases the number of bounces for realtime GI c) It reduces shadow noise in mixed lighting d) It improves performance by reducing lightmap resolution Answer: a) It enhances the sampling quality for specular reflections 98. How does Unity's "Lightmapper" affect the lighting process? a) It calculates realtime lighting b) It bakes static lighting into textures c) It reduces the performance cost of shadow rendering d) It creates dynamic lighting for moving objects Answer: b) It bakes static lighting into textures 99. What does Unity's "Reflection Intensity" affect in a scene? a) The number of light bounces b) The brightness of reflective surfaces c) The color of the Skybox d) The softness of shadows Answer: b) The brightness of reflective surfaces 100. What does adjusting the "Exposure" in Unity's lighting settings do? a) It controls how much light is reflected from surfaces b) It adjusts the overall brightness of the scene c) It changes the color intensity of the shadows d) It modifies the range of Point Lights Answer: b) It adjusts the overall brightness of the scene