Solve
Guides
0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Standard X
Physics
Defects of Vision and Their Correction
Question

Figures (a), (b), (c) and (d) respectively correspond to
369632_25e33fe7c53b46d28feb68538da4c4cc.png
  1. The short-sighted eye, the correction of long-sight, the long-sighted eye and the correction of short-sight
  2. The short-sighted eye, the correction of short-sight, the long-sighted eye and the correction of long-sight
  3. The long-sighted eye, correction of short-sight, the short-sighted eye and the correction of long-sight
  4. The long-sighted eye, the correction of long-sight, the long-sighted eye and the correction of short-sight

A
The long-sighted eye, correction of short-sight, the short-sighted eye and the correction of long-sight
B
The short-sighted eye, the correction of short-sight, the long-sighted eye and the correction of long-sight
C
The short-sighted eye, the correction of long-sight, the long-sighted eye and the correction of short-sight
D
The long-sighted eye, the correction of long-sight, the long-sighted eye and the correction of short-sight
Open in App
Solution
Verified by Toppr

In Myopia eyes, Images of an object form before the retina so for correction diverging lens are used.
In Hypermetropia eyes, Images of an object formed behind the retina so for correction converging lens are used.
Hence,
R.E.F image
(a) Myopia of short-sightedness
R.E.F image
(b) Corrected short-sightedness
R.E.F image
(c) Hypermetropia or long-sightedness
R.E.F image
(d) Corrected hypermetropia

1155389_369632_ans_e9bc52419d854d78a7446c46c6c144ce.png

Was this answer helpful?
1
Similar Questions
Q1

(a) What is long-sightedness ? State the two causes of long-sightedness (or hypermetropia). With the help of ray diagrams, show :
(i) the eye-defect long-sightedness.
(ii) correction of long-sightedness by using a lens.
(b) An eye has a near point distance of 0.75 m. What short of lens in spectacles would be needed to reduce the near point distance to 0.25 m ? Also calculate the power of lens required. Is this eye long-sighted or short-sighted ?
(c) An eye has a far point of 2 m. What type of lens in spectacles would be needed to increase the far point to infinity ? Also calculate the power of lens required. Is this eye long-sighted or short-sighted ?

View Solution
Q2
Complete the following sentences:
(a) A short-sighted person cannot see ............ objects clearly. Short-sightedness can be corrected by using ........... lenses.
(b) A long-sighted person cannot see ........... objects clearly. Long-sightedness can be corrected by using .............. lenses.
View Solution
Q3

Concave lens: Short sight :: _________ : Long sight


View Solution
Q4
(a) What is short-sightedness? State the two causes of short-sightedness (or myopia). With the help of ray diagrams, show:
(i) the eye-defect short-sightedness.
(ii) correction of short-sightedness by using a lens.
(b) A person having short-sight cannot see objects clearly beyond a distance of 1.5 m. What would be the nature and power of the corrective lens to restore proper vision?
View Solution
Q5
Differentiate between:
(a) real and virtual images
(b) long sight and short sight
(c) microscope and telescope
View Solution