NCERT/Class 10/Science/The Human Eye and the Colourful World

The Human Eye and the Colourful World

Class 10 · Science

150 questions50 easy50 medium50 hard

Sample Questions

Q1.The opening at the centre of the iris through which light enters the eye is called:

  • ACornea
  • BPupil
  • CRetina
  • DFovea

Q2.In which order does light travel through the parts of the human eye before forming an image?

  • ACornea → Pupil → Aqueous humour → Lens → Vitreous humour → Retina
  • BPupil → Cornea → Lens → Retina
  • CCornea → Lens → Pupil → Retina
  • DIris → Cornea → Lens → Retina

Q3.Why does white light disperse into different colours when it passes through a prism?

  • ADifferent colours have different speeds in glass, so they refract by different amounts
  • BThe prism absorbs some colours more than others
  • CWhite light contains only three primary colours which separate
  • DThe prism reflects different colours at different angles

Q4.The far point of a normal human eye is:

  • A25 cm
  • B100 cm
  • C500 cm
  • DInfinity

Q5.When sunlight enters a water droplet during rainbow formation, which of the following is the correct sequence of optical phenomena?

  • ARefraction → Dispersion → Internal reflection → Refraction
  • BDispersion → Refraction → Internal reflection
  • CInternal reflection → Dispersion → Refraction
  • DRefraction → Internal reflection → Dispersion

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

MoonNewton's experimentRayleigh scatteringSnell's lawSunTyndall effectVIBGYORangle of deviationangle of incidenceangle of prismangular dispersionantisolar pointapparent depthapparent position of starsapparent shapeaqueous humouratmosphereatmospheric refractionbifocal lensbinocular visionblind spotblue skycausesciliary musclescolloidcombination of lensescomparisonconcave lensconescontact lensesconvex lenscorneacorrectioncritical angledanger signalsdefects of visiondiagnosisdispersiondispersive powerearly sunriseelevationeye lensfar pointfocal lengthfoveageometryglassglass slabgreen flashhuman eye structurehypermetropiaimage formationinternal reflectionirislens formulalens powerminimum deviationmiragemyopianear pointoptic nerveplanetspoint sourcepower of accommodationpresbyopiaprimary rainbowprismpupilrainbowreading glassesrecombinationred colourreflectionrefractionrefractive indexretinarodsscatteringscattering intensityscattering of lightsecondary rainbowsensitivityspectrumsunrise sunsetthin prismtotal internal reflectiontwinklingtwinkling of starsviolet lightvisible spectrumvitreous humourwater dropletswavelengthwhite cloudswhite light

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