MCQ Science and Technology Class 9 Chapter 11 Maharashtra Board Reflection of Light 1. Where is the light source placed in a torch with a concave mirror?At the poleAt the focusBeyond the centre of curvatureBetween pole and centre of curvatureQuestion 1 of 202. Where is the light source placed in floodlights with a concave mirror?At the focusA little beyond the centre of curvatureAt the poleBetween pole and focusQuestion 2 of 203. Why are concave mirrors used in solar devices?They absorb lightThey create virtual imagesThey reflect sun rays to the focal planeThey disperse lightQuestion 3 of 204. Why are convex mirrors used in cars?They magnify imagesThey allow a wider viewThey produce real imagesThey focus lightQuestion 4 of 205. Why does a concave mirror burn paper when focusing sunlight?It disperses lightIt absorbs lightIt converges light to a pointIt creates a virtual imageQuestion 5 of 206. What is the sign of the focal length of a concave mirror in the Cartesian sign convention?PositiveNegativeZeroVariableQuestion 6 of 207. What is the sign of the focal length of a convex mirror in the Cartesian sign convention?NegativePositiveZeroVariableQuestion 7 of 208. Where is the object placed in the Cartesian sign convention?On the right of the mirrorAt the poleOn the left of the mirrorAt the focusQuestion 8 of 209. How are distances to the right of the pole measured in the Cartesian sign convention?NegativePositiveZeroVariableQuestion 9 of 2010. How are distances measured vertically upwards in the Cartesian sign convention?NegativePositiveZeroVariableQuestion 10 of 2011. What is the mirror formula given in the document?1/v + 1/u = 1/f1/v - 1/u = 1/f1/u + 1/f = 1/v1/v + 1/f = 1/uQuestion 11 of 2012. What does magnification measure in a spherical mirror?Ratio of focal length to object distanceRatio of image height to object heightRatio of image distance to focal lengthRatio of object distance to image distanceQuestion 12 of 2013. What is the magnification formula involving distances in a spherical mirror?M = v/uM = -v/uM = u/vM = -u/vQuestion 13 of 2014. What is the sign of the object height in the Cartesian sign convention?NegativePositiveZeroVariableQuestion 14 of 2015. What is the sign of the image height for virtual images in the Cartesian sign convention?NegativePositiveZeroVariableQuestion 15 of 2016. What is the sign of the object distance (u) in the Cartesian sign convention?PositiveNegativeZeroVariableQuestion 16 of 2017. What type of mirror is used in a periscope?Concave mirrorConvex mirrorPlane mirrorCurved mirrorQuestion 17 of 2018. What type of mirror is used in car head lamps?Convex mirrorPlane mirrorConcave mirrorFlat mirrorQuestion 18 of 2019. What type of mirrors are the pieces of a broken spherical mirror?Plane mirrorsSpherical mirrorsFlat mirrorsTransparent mirrorsQuestion 19 of 2020. Which property is common to three mirrors made from one sphere?PoleCentre of curvaturePrincipal focusFocal lengthQuestion 20 of 20 Loading...
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