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AnswerQuestion Answers for Class 12Class 12 BiologyClass 12 ChemistryClass 12 EnglishClass 12 MathsClass 12 PhysicsClass 12 Social ScienceClass 12 Business StudiesClass 12 EconomicsQuestion Answers for Class 11Class 11 EconomicsClass 11 Computer ScienceClass 11 BiologyClass 11 ChemistryClass 11 EnglishClass 11 MathsClass 11 PhysicsClass 11 Social ScienceClass 11 AccountancyClass 11 Business StudiesQuestion Answers for Class 10Class 10 ScienceClass 10 EnglishClass 10 MathsClass 10 Social ScienceClass 10 General KnowledgeQuestion Answers for Class 9Class 9 General KnowledgeClass 9 ScienceClass 9 EnglishClass 9 MathsClass 9 Social ScienceQuestion Answers for Class 8Class 8 ScienceClass 8 EnglishClass 8 MathsClass 8 Social ScienceQuestion Answers for Class 7Class 7 ScienceClass 7 EnglishClass 7 MathsClass 7 Social ScienceQuestion Answers for Class 6Class 6 ScienceClass 6 EnglishClass 6 MathsClass 6 Social ScienceQuestion Answers for Class 5Class 5 ScienceClass 5 EnglishClass 5 MathsClass 5 Social ScienceQuestion Answers for Class 4Class 4 ScienceClass 4 EnglishClass 4 MathsLens is used to correct the defect of vision termed as presbyopia.A. ConvexB. ConcaveC. BifocalD. ContactAnswerVerified558k+ viewsHint: Recall the different defects of vision in the human eye and the types of lenses used to correct these defects of vision. Recall the basics of the defect of vision termed as presbyopia. Also, check which types of lens are used to correct this defect of vision of the human eye.Complete answer: The person with the defect of vision myopia is the defect in which the person is not able to see the objects at large distances clearly is known as myopia. This defect of vision can be corrected using a concave lens.The person with the defect of vision hypermetropia is the defect in which the person is not able to see the objects at near distances clearly is known as hypermetropia. This defect of vision can be corrected using a convex lens.The defect of vision termed as presbyopia is the defect mostly occurring in old-aged persons in which the persons lose their ability to see the distance as well as nearby objects. This defect of vision includes two defects of vision which are myopia and hypermetropia. Hence, the person with the defect of vision presbyopia is suggested to use the lens having both concave and convex lenses.The bifocal lens is made of concave as well as convex lens. The upper part of this bifocal lens is made up of the concave lens and lower part of this lens is made up of convex lens. Hence, the person with presbyopia can see near as well as distant objects clearly. Therefore, the lens used to correct the presbyopia of the person is bifocal.Hence, the correct option is C.Note:The presbyopia can also be defined as the defect of vision due to aging in which the person cannot see the nearby objects clearly. Hence, a convex lens is suggested for such persons. But the person cannot see distant objects clearly using this lens. Hence, to avoid frequent wearing and removing of the spectacles, persons with presbyopia are suggested to use bifocal lenses.Recently Updated PagesWhat happens to glucose which enters nephron along class 10 biology CBSEWrite a dialogue with at least ten utterances between class 10 english CBSEA circle is inscribed in an equilateral triangle and class 10 maths CBSEWhen the JanmiKudian Act was passed that granted the class 10 social science CBSEA sector containing an angle of 120 circ is cut off class 10 maths CBSEThe sum of digits of a two digit number is 13 If t-class-10-maths-ICSEWhat happens to glucose which enters nephron along class 10 biology CBSEWrite a dialogue with at least ten utterances between class 10 english CBSEA circle is inscribed in an equilateral triangle and class 10 maths CBSEWhen the JanmiKudian Act was passed that granted the class 10 social science CBSEA sector containing an angle of 120 circ is cut off class 10 maths CBSEThe sum of digits of a two digit number is 13 If t-class-10-maths-ICSE

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