SSC (English Medium) Class 9Maharashtra State Board
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Balbharati solutions for Class 9 Science and Technology chapter 11 - Reflection of Light

Balbharati Class 9 Science and Technology

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Balbharati Balbharati Class 9 Science and Technology

Balbharati Class 9 Science and Technology - Shaalaa.com

Chapter 11: Reflection of Light

Exercise

Chapter 11: Reflection of Light Exercise Exercise solutions [Page 127]

Exercise | Q 1.1 | Page 127

Answer the following question.

Explain the difference between a plane mirror, a concave mirror and a convex mirror with respect to the type and size of the images produced. 

Exercise | Q 1.2 | Page 127

Answer the following question.

Describe the positions of the source of light with respect to a concave mirror in  
1.Torch light  
2. Projector lamp
3. Floodlight 

Exercise | Q 1.3 | Page 127

Answer the following question.

Why are concave mirrors used in solar devices? 

Exercise | Q 1.4 | Page 127

Answer the following question.

Why are the mirrors fitted on the outside of cars convex? 

Exercise | Q 1.5 | Page 127

Answer the following question.

Why does obtaining the image of the sun on a paper with the help of a concave mirror burn the paper? 

Exercise | Q 1.6 | Page 127

Answer the following question.

If a spherical mirror breaks, what type of mirrors are the individual  pieces? 

Exercise | Q 2 | Page 127

What sign conventions are used for reflection from a spherical mirror?

Exercise | Q 3 | Page 127

Draw ray diagrams for the cases of images obtained in concave mirrors as described in the table below. 

                   Images formed by concave mirrors 
No. Position of the object Position of the image Nature of image Size of the image
1 Between pole and focus  Behind the mirror  Erect, virtual  Magnified
2 At the focus  At infinity  Inverted, real  Very large
3 Between focus and centre of curvature Beyond the centre of curvature Inverted, real  Magnified
4 At the centre of 
curvature 
At the centre of curvature Inverted, real  Same as the object
5 Beyond the centre of curvature Between the centre of curvature and focus Inverted, real  Diminished
6 At a very large 
 (infinite) distance 
At focus Inverted, real  Point image
Exercise | Q 4 | Page 127

Which type of mirrors are used in the following? 

Periscope, floodlights, shaving mirror, kaleidoscope, street lights, head lamps of a car. 

Exercise | Q 5.1 | Page 127

Solve the following example .

An object of height 7 cm is kept at a distance of 25 cm in front of a concave mirror. The focal length of the mirror is 15 cm. At what distance from the mirror should a screen be kept so as to get a clear image ? what will be the size and nature of the image ?

Exercise | Q 5.2 | Page 127

Solve the following example .

A convex mirror has a focal length of 18 cm. The image of an object kept in front of the mirror is half the height of the object. What is the distance of the object from the mirror?  

Exercise | Q 5.3 | Page 127

Solve the following example .

 A 10 cm long stick is kept in front of a concave mirror having focal length of 10 cm in such a way that the end of the stick closest to the pole is at a distance of 20 cm. What will be the length of the image?  

Exercise | Q 6 | Page 127

Three mirrors are created from a single sphere. Which of the following - pole, centre of curvature, radius of curvature, principal axis - will be common to them and which will not be common? 

Chapter 11: Reflection of Light

Exercise

Balbharati Balbharati Class 9 Science and Technology

Balbharati Class 9 Science and Technology - Shaalaa.com

Balbharati solutions for Class 9 Science and Technology chapter 11 - Reflection of Light

Balbharati solutions for Class 9 chapter 11 (Reflection of Light) 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 Balbharati Class 9 Science and Technology solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Balbharati textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 9 Science and Technology chapter 11 Reflection of Light are Concept of Light and Reflection of light, Magnification due to spherical mirrors, Spherical mirrors and images formed by them, Mirror and types of mirrors.

Using Balbharati Class 9 solutions Reflection of Light 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 Class 9 prefer Balbharati Textbook Solutions to score more in exam.

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