SSC (Marathi Semi-English) 10thMaharashtra State Board
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Kavita from 10th is Using Spectacles. the Power of the Lenses in Her Spectacles is –2.5 Dioptre. Answer the Following Questions:Which Lenses Are Used in Her Spectacles? and State the Defect of Vision Kavita is Suffering From. - SSC (Marathi Semi-English) 10th - Science and Technology - 1

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Question

Kavita from 10th is using spectacles. The power of the lenses in her spectacles is –2.5 dioptre. Answer the following questions:

1) Which lenses are used in her spectacles?

2) State the defect of vision Kavita is suffering from.

3) Find the focal length of the lenses used in her spectacles

Solution

1) Concave lens

2) Myopia or nearsightedness

3) `f = 1/D = 1/2.5 = 0.4 m`

  Is there an error in this question or solution?

APPEARS IN

 2017-2018 (March) (with solutions)
Question 3.5 | 3.00 marks
Solution Kavita from 10th is Using Spectacles. the Power of the Lenses in Her Spectacles is –2.5 Dioptre. Answer the Following Questions:Which Lenses Are Used in Her Spectacles? and State the Defect of Vision Kavita is Suffering From. Concept: Refraction at Spherical Surfaces and by Lenses - Power of a Lens.
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