A short sighted person cannot see distant objects clearly because the image forms
Correct answer: B. in front of the retina, and is corrected with a diverging lens
- A. behind the retina, and is corrected with a converging lens
- B. in front of the retina, and is corrected with a diverging lens
- C. on the retina but upside down
- D. outside the eye
Explanation
The eyeball is too long or the lens too strong, so parallel rays converge before reaching the retina, and a diverging lens spreads them slightly first to push the focus back. Long sight is the opposite case, corrected with a converging lens. Both defects are described by the far point and near point of the eye.
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About Optics
Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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