NCERT/Class 10/Science/Light – Reflection and Refraction

Light – Reflection and Refraction

Class 10 · Science

150 questions50 easy50 medium50 hard

Sample Questions

Q1.What is a convex lens?

  • AA lens that is thicker at the centre and converges light rays
  • BA lens that is thinner at the centre and diverges light
  • CA flat piece of glass
  • DA type of mirror

Q2.An object 4 cm tall is placed 25 cm from a convex lens of focal length 10 cm. Find the position, nature, and size of the image.

  • Av = 16.67 cm, real, inverted, h' = -2.67 cm
  • Bv = 50 cm, real, inverted, h' = -8 cm
  • Cv = 10 cm, virtual, erect
  • Dv = 25 cm, same size

Q3.A concave mirror of focal length 10 cm forms an image at 30 cm from the mirror. What is the object distance?

  • A15 cm from the mirror
  • B20 cm
  • C10 cm
  • D7.5 cm

Q4.Why does a pencil appear bent when partially immersed in water?

  • ADue to refraction of light at the water-air interface
  • BDue to reflection
  • CDue to absorption of light
  • DDue to dispersion

Q5.An object is placed 30 cm from a concave mirror of focal length 15 cm. Where will the image be formed?

  • AAt 30 cm in front of the mirror
  • BAt 15 cm in front of the mirror
  • CAt 10 cm in front of the mirror
  • DAt infinity

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
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Concepts Covered

AlgebraicAlgebraic DerivationAngle of DeviationApertureApparent DepthApplicationsAtmospheric RefractionCentre of CurvatureCombinationComplete SolutionConcave LensConcave MirrorConvex LensConvex MirrorCritical AngleDenser MediumDiamondDioptreDispersionEffective Focal LengthEnergyFocal LengthFocal PointGlassGlass SlabHypermetropia CorrectionIdentificationImage FormationImage InterpretationImage MovementImage PropertiesImage RangeImage at CImage at FImage at InfinityLateral DisplacementLaws of ReflectionLensLens CombinationLens FormulaLens PropertiesLightMagnificationMagnifying GlassMirrorMirror ComparisonMirror FormulaMirror TerminologyMulti-stepMulti-step NumericalMultiple ImagesMyopia CorrectionNormalNormal IncidenceNumericalOptical CentreOptical DensityOpticsPlane MirrorPlane MirrorsPolePowerPower of LensPrincipal AxisPrismProofRadius of CurvatureRainbowRarer MediumRay DiagramReal ImageReal-world ProblemReciprocalReflectionRefractionRefractive IndexRelativeSame Size ImageSign ConventionSnell's LawSolar ApplicationsSpeed of LightSpherical MirrorsSunTotal Internal ReflectionTwo SolutionsTypes of LensesVerificationVirtual ImageWaterWave Nature

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