MCQ Chapter 11 Class 7 Science Curiosity NCERT Advertisement Light: Shadows and Reflections 1. What is lateral inversion in a plane mirror?The image is upside downThe left appears right and right appears leftThe image is smaller than the objectThe image is blurredQuestion 1 of 202. Why is “AMBULANCE” written in reverse on ambulances?To make it easier to readDue to lateral inversion in rear-view mirrorsTo confuse driversTo make it appear largerQuestion 2 of 203. What type of image does a pinhole camera form?Erect and same sizeInverted and smallerErect and largerInverted and same sizeQuestion 3 of 204. In Activity 11.9, why is the image of the candle flame upside down?The pinhole bends the lightThe pinhole camera forms an inverted imageThe candle is placed upside downThe screen is tiltedQuestion 4 of 205. What material is used as a screen in a pinhole camera?Opaque paperTransparent glassTranslucent tracing paperThick clothQuestion 5 of 206. What is the purpose of a periscope?To form shadowsTo see objects not directly visibleTo create colorful patternsTo invert imagesQuestion 6 of 207. How are mirrors arranged in a periscope?Parallel to each otherIn a triangular shapeIn a Z-shaped boxPerpendicular to each otherQuestion 7 of 208. What is a kaleidoscope used for?To redirect lightTo form shadowsTo create beautiful patternsTo measure light intensityQuestion 8 of 209. How many mirrors are used in a kaleidoscope?OneTwoThreeFourQuestion 9 of 2010. What happens when a kaleidoscope is turned?The pattern remains the sameA different pattern is formedThe image becomes invertedThe mirrors breakQuestion 10 of 2011. Which of the following is a luminous object?Pole StarVenusMirrorMoonQuestion 11 of 2012. In Activity 11.6, what is observed when a mirror is placed in the path of a light beam?The beam disappearsThe beam’s path changesThe beam becomes brighterThe beam forms a shadowQuestion 12 of 2013. What is the purpose of adding a drop of milk to water in the laser beam activity?To bend the laser beamTo make the laser beam visibleTo block the laser beamTo change the laser’s colorQuestion 13 of 2014. In a pinhole camera, what happens if the pinhole is made larger?The image becomes sharperThe image becomes brighter but less sharpThe image disappearsThe image becomes largerQuestion 14 of 2015. Why do translucent objects form lighter shadows?They block all lightThey allow some light to passThey reflect light completelyThey absorb lightQuestion 15 of 2016. What is the role of the screen in shadow formation?It emits lightIt reflects lightIt displays the shadowIt blocks lightQuestion 16 of 2017. In Activity 11.7, what happens to the image size when the object is moved closer to the mirror?The image becomes smallerThe image becomes largerThe image size remains the sameThe image disappearsQuestion 17 of 2018. What is a key difference between a pinhole camera and a plane mirror?A pinhole camera forms an erect imageA plane mirror forms an inverted imageA pinhole camera forms an inverted imageA plane mirror forms a smaller imageQuestion 18 of 2019. Why are LED lamps promoted by the Indian government?They are cheaper to produceThey consume less power and are brighterThey emit natural lightThey do not need recyclingQuestion 19 of 2020. In shadow puppetry, what creates life-like movements?Moving the light source and puppetsUsing translucent screensChanging the puppet’s colorUsing a single mirrorQuestion 20 of 20 Loading...
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