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![Balbharati solutions for Science and Technology 1 [English] 10 Standard SSC Maharashtra State Board chapter 7 - Lenses - Shaalaa.com](/images/science-and-technology-1-english-10-standard-ssc-maharashtra-state-board_6:c9a4ae86c3724b9b8c519cd188fdfa1f.jpg "Balbharati solutions for Science and Technology 1 [English] 10 Standard SSC Maharashtra State Board chapter 7 - Lenses")
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Solutions for Chapter 7: Lenses
Below listed, you can find solutions for Chapter 7 of Maharashtra State Board Balbharati for Science and Technology 1 [English] 10 Standard SSC Maharashtra State Board.
Balbharati solutions for Science and Technology 1 [English] 10 Standard SSC Maharashtra State Board 7 Lenses Exercises [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 | Convex 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 a 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?
Solutions for 7: Lenses
Balbharati solutions for Science and Technology 1 [English] 10 Standard SSC Maharashtra State Board chapter 7 - Lenses
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Concepts covered in Science and Technology 1 [English] 10 Standard SSC Maharashtra State Board chapter 7 Lenses are Power of a Lens, Eye Defect and its Correction: Hypermetropia or Far-sightedness, Eye Defect and Its Correction: Presbyopia, Convex Lens, Concave Lens, Spherical Lens, Images Formed by Convex Lenses, Combination of Lenses, Human Eye, Working of the Human Eye, Eye Defect and Its Correction: Myopia Or Near-sightedness, Images Formed by Concave Lenses, Sign Convention, Lens Formula, Magnification Due to Spherical Lenses, Persistence of Vision, Concept of Lenses.
Using Balbharati Science and Technology 1 [English] 10 Standard SSC Maharashtra State Board solutions Lenses exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Balbharati Solutions are essential questions that can be asked in the final exam. Maximum Maharashtra State Board Science and Technology 1 [English] 10 Standard SSC Maharashtra State Board students prefer Balbharati Textbook Solutions to score more in exams.
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