MCQ Chapter 11 Class 7 Science Curiosity NCERT Advertisement Light: Shadows and Reflections 1. Which of the following objects emits its own light?MoonSunMirrorGlassQuestion 1 of 202. What type of object is the Moon classified as?LuminousNon-luminousTransparentOpaqueQuestion 2 of 203. What is the main source of natural light on Earth?StarsLightningSunFirefliesQuestion 3 of 204. Which of these is an example of an artificial light source?FireStarsLightningFirefliesQuestion 4 of 205. What does Activity 11.1 with matchboxes demonstrate?Light bends around cornersLight travels in a straight lineLight passes through opaque objectsLight forms imagesQuestion 5 of 206. In Activity 11.2, why could the candle flame not be seen through a bent pipe?The pipe was opaqueLight travels in a straight lineThe pipe was too shortThe candle was too dimQuestion 6 of 207. What happens when light passes through a transparent material?It is completely blockedIt passes almost completelyIt passes partiallyIt forms a shadowQuestion 7 of 208. Which material allows light to pass partially?CardboardGlassTracing paperThick clothQuestion 8 of 209. What type of material does not allow light to pass through?TransparentTranslucentOpaqueReflectiveQuestion 9 of 2010. What is formed when an opaque object blocks the path of light?ReflectionImageShadowBeamQuestion 10 of 2011. Which type of object forms the darkest shadows?TransparentTranslucentOpaqueReflectiveQuestion 11 of 2012. What is required to observe a shadow?A luminous object onlyA source of light, an opaque object, and a screenA transparent object and a mirrorA translucent object and a torchQuestion 12 of 2013. In Activity 11.4, what happens to the shadow when the object is moved closer to the screen?The shadow becomes largerThe shadow becomes smallerThe shadow disappearsThe shadow changes colorQuestion 13 of 2014. Does the color of an opaque object affect the color of its shadow?Yes, the shadow matches the object’s colorNo, the shadow remains darkYes, the shadow becomes lighterNo, the shadow becomes brighterQuestion 14 of 2015. What is the term for the change in direction of light by a mirror?Shadow formationReflectionRefractionInversionQuestion 15 of 2016. In Activity 11.5, what happens when sunlight falls on a shiny steel plate?A shadow is formed on the plateLight is redirected to form a bright spotThe plate absorbs the lightThe plate becomes luminousQuestion 16 of 2017. What is the image formed by a plane mirror called?ShadowReflectionObjectImageQuestion 17 of 2018. What is a characteristic of an image formed by a plane mirror?It is invertedIt is of the same size as the objectIt can be obtained on a screenIt is always smaller than the objectQuestion 18 of 2019. What term describes an upright image in a plane mirror?InvertedErectLateralReflectedQuestion 19 of 2020. Why can’t the image formed by a plane mirror be obtained on a screen?It is too faintIt is a virtual imageIt is invertedIt is too brightQuestion 20 of 20 Loading...
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