CBSE Class 10 Answered
differenciate presbyopia and hypermetropia
Asked by | 01 Jan, 2013, 10:54: AM
Expert Answer
HYPERMETROPIA:
- it the defect of a human eye, which is able to see far away object clearly but not the nearby objects.
- the correction lens for this defect is convex lens of suitable focal length or power.
- causes:
1: decrease in length of thr eye ball.
2: increase in focal length of the eye lens.
PRESBYOPIA:
- it is th edefect of eye during old age, with increase of age the ciliary muscles holding the eye lens weaken and the eye loses some of its flexibility this causes presbyopia.
- the correction for this lens is a bifocal lens.
- causes:
1: increase in focal length of eye lens.
2: old age.
Answered by | 01 Jan, 2013, 12:09: PM
Application Videos
Concept Videos
CBSE 10 - Physics
Asked by saritavishwakarma1986 | 04 Jan, 2024, 12:23: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by udaykuna006 | 16 Jul, 2023, 07:20: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by bhu.joshi54 | 08 Aug, 2022, 07:36: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by sunnysuketu | 26 May, 2022, 08:33: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by sunnysuketu | 26 May, 2022, 08:33: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by abhishekuppala598 | 06 Feb, 2022, 09:30: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by Ankit9142110345 | 20 May, 2021, 09:58: PM
ANSWERED BY EXPERT
CBSE 10 - Physics
Asked by drishtidixitb | 13 Mar, 2021, 02:31: PM
ANSWERED BY EXPERT