Give a brief answer to the question below.
A student uses spectacles of focal length \(– 5.4\ m\).
(a) Name the defect of vision he is suffering from.
(b) Which lens is used for the correction of this defect ?
(c) List two main causes of developing this defect.
(d) Compute the power of this lens.
(a) Name the defect of vision he is suffering from.
(b) Which lens is used for the correction of this defect ?
(c) List two main causes of developing this defect.
(d) Compute the power of this lens.
(a) The defect of vision he is suffering from is .
(b) A can be used to correct this flaw.
(c) The of the eyeball causes this defect. The distance between the eye lens and the retina is , or the focal length of the eye lens is .
(d) The power of the lens is \(D\).