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# Balbharati solutions for Maharashtra state board SSC 9th Standard Science and Technology chapter 11 - Reflection of Light [Latest edition]

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## Chapter 11: Reflection of Light

Exercise

### Balbharati solutions for Maharashtra state board SSC 9th Standard Science and Technology Chapter 11 Reflection of Light Exercise [Page 127]

Exercise | Q 1.1 | Page 127

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

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

Why are concave mirrors used in solar devices?

Exercise | Q 1.4 | Page 127

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

Exercise | Q 1.5 | Page 127

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

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?

Exercise

## Balbharati solutions for Maharashtra state board SSC 9th Standard Science and Technology chapter 11 - Reflection of Light

Balbharati solutions for Maharashtra state board SSC 9th Standard Science and Technology 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 Maharashtra state board SSC 9th Standard Science and Technology solutions in a manner that help students grasp basic concepts better and faster.

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

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