Maharashtra Board class 10 Chapter 7 lenses textbook Solutions Pdf :
Our Science Chapter 7 lenses class 10 questions and answers Pdf are highly effective for Maharashtra state board Exam. These Class 10 science lenses Maharashtra Board Solutions is extremely helpful when you are preparing for class 10 exams.
Solving all the questions of lenses chapter from the textbook without any trouble is a difficult task for class 10 science students. Most of the time Students get stuck with a particular Complex question. They try to attempt solving questions several times but are unable to find the correct answer. For these Our Class 10 Science textbooks Solutions have been studied & analyzed by ybstudys experts and the solutions have been created as per the Maharashtra state board syllabus and students understanding. Students can easily access these useful Solution of 10th Class Science lenses Class 10 Notes Pdf Download.
Cass 10 Science textbook Solutions will help a student to make a good score in their examination. So in order to help you with that, we have Compiled 10th Science Part 1 Chapter 7 exercise with answers for Class 10 below.
Important Points to Remember about lenses
- Lenses are basically magnifying glasses with curved sides.
- A lens having both spherical surfaces puffed up outwards is called a convex lens or double convex lens or biconvex lens .
- A lens having both spherical surfaces curved inwards is called a concave lens or double concave lens or biconcave lens
- Cornea: The cornea is a thin and transparent cover (membrane) on the human eye through which light enters the eye. Maximum refraction of light rays entering the eye occurs at the cornea.
- Iris : The iris is a dark fleshy screen (muscular diaphragm) behind the cornea in the human eye. Its colours are different for different people.
- Pupil : The pupil is a small circular opening of changing diameter at the centre of the iris in the human eye
- Uses of a convex lens: Simple microscope, compound microscope, telescope, camera, projector, spectrometer, spectacles, etc.
- Uses of a concave lens : A concave lens is used in spectacles to correct myopia. It is also used in optical instruments
- Use of a telescope : A telescope is used to observe a distant object such as mountain, moon, planet, star in the magnified form
- Farsightedness : In this defect the human eye can see distant objects clearly but cannot see nearby objects distinctly Nearsightedness : It’s is also called as Myopia In this case, the eye can see nearby objects clearly but the distant objects appear indistinct
Question 1. Match the following table and explain them.
Column 1 | Column 2 | Column 3 |
---|---|---|
Farsightedness | Nearby object can be seen clearly |
Bifocal lens |
Presbyopia | Faraway object can be seen clearly |
Concave lens |
Nearsightedness | Problem of old age |
Convex lens |
Column 1 | Column 2 | Column 3 |
---|---|---|
Farsightedness | Faraway object can be seen clearly |
Convex lens |
Presbyopia | Problem of old age | Bifocal lens |
Nearsightedness | Near by object can be seen clearly |
Concave lens |
Farsightedness | Nearsightedness |
---|---|
It’s is also called myopia | It’s is also called hypermetropia |
In these defect human eye is unable to see nearby objects clearly |
In these defect human eye is unable to see distant objects clearly |
In these defect the image of a distant object is formed in front of the retina |
In these defect the image of a nearby object would be formed behind the retina |
This defect can be corrected by using a concave lens | This defect can be corrected by using convex lens |
Concave lens | Convex lens |
---|---|
Concave lens has its surfaces curved inwards | Convex lens has its surfaces puffed up outwards |
It’s is thicker at the edges than in the middle | It’s is a thicker in the middle than at the edges |
It’s can form only a virtual image | It’s can form only a real image as well as virtual images |
It’s can form only a diminished image | It’s can be form a magnified diminished or the same sized image depending on the position of the object |
Maharashtra state board class 10 Science solutions part 1:
Chapter 1 Science Part – I : Class 10 Science Chapter 1 – Gravitation Textbook Solutions
Chapter 2 Science Part – I : Class 10 Science Chapter 2 – Periodic Classification of Elements textbook solutions.
Chapter 3 Science Part – I : Class 10 Science Chapter 3 – Chemical Reactions and Equations textbook solutions
Chapter 4 Science Part – I : Class 10 Science Chapter 4 – Effects of electric current textbook solutions.
Chapter 5 Science Part – I : Class 10 Science Chapter 5 – Heat textbook solutions.
Chapter 6 Science Part – I : Class 10 Science Chapter 6 – Refraction of light textbook solutions.