Chapters
Chapter 7: Lenses
Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board Chapter 7 Lenses [Page 92]
Match the columns in the following table and explain them.
| Column 1 | Column 2 | Column 3 |
| Farsightedness |
Nearby object can be seen clearly
|
Bifocal lens |
| Presbyopia | Far away object can be seen clearly | Concave lens |
| Nearsightedness | Problem of old age | Concave lens |
Draw a figure explaining various terms related to a lens.
At which position will you keep an object in front of a convex lens so as to get a real image of the same size as the object? Draw a figure.
Give scientific reason:
Simple microscope is used for watch repairs.
Give scientific reason:
One can sense colours only in bright light.
Give scientific reason:
We cannot clearly see an object kept at a distance less than 25 cm from the eye.
Explain the working of an astronomical telescope using refraction of light.
Distinguish between Farsightedness and Nearsightedness.
Distinguish between Concave lens and Convex lens.
What is the function of iris and the muscles connected to the lens in human eye?
Solve the following example.
Doctor has prescribed a lens having power +1.5 D. What will be the focal length of the lens? What is the type of the lens and what must be the defect of vision?
Solve the following example.
5 cm high object is placed at a distance of 25 cm from a converging lens of focal length of 10 cm. Determine the position, size and type of the image.
Solve the following example.
Three lenses having power 2, 2.5 and 1.7 D are kept touching in a row. What is the total power of the lens combination?
Solve the following example.
An object kept 60 cm from a lens gives a virtual image 20 cm in front of the lens. What is the focal length of the lens? Is it a converging lens or diverging lens?
Chapter 7: Lenses
Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 7 - Lenses
Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 7 (Lenses) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board Science and Technology Part 1 10th Standard SSC Maharashtra State Board solutions in a manner that help students grasp basic concepts better and faster.
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Concepts covered in Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 7 Lenses are Power of a Lens, Combination of Lenses, Concept of Human Eye, Defects of Vision and Their Corrections, Lenses, Sign Convention, Magnification of a Lens, Concave Lens, Nearsightedness/ Myopia, Farsightedness Or Hypermetropia, Presbyopia, Persistence of Vision, Convex Lens, Concave Lens.
Using Balbharati 10th Standard [इयत्ता १० वी] solutions Lenses exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Balbharati Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board 10th Standard [इयत्ता १० वी] prefer Balbharati Textbook Solutions to score more in exam.
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