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Frank Modern Certificate Solution for Class 9 Physics Chapter 6 - Light - Spherical Mirrors

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Frank Textbook Solutions Chapter 6 - Light - Spherical Mirrors

Frank Textbook Solutions are considered extremely helpful for solving difficult questions in the ICSE Class 9 Physics exam. TopperLearning Textbook Solutions are compiled by our subject experts. Herein, you can find all the answers to the questions of   Chapter 6 - Light - Spherical Mirrors for the Frank textbook.

Frank Textbook Solutions for class 9  are in accordance with the latest ICSE syllabus, and they are amended from time to time to be most relevant. Our free Frank Textbook Solutions for ICSE Class 9 Physics will give you deeper insight on the chapters and will help you to score more marks in the final examination. ICSE Class 9 students can refer to our solutions while doing their homework and while preparing for the exam.

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Frank Modern Certificate Solution for Class 9 Physics Chapter 6 - Light - Spherical Mirrors Page/Excercise 258

Solution 1

A spherical mirror is a part of a hollow glass sphere silvered on one side.

Solution 2

Solution 3

Focal length = 1/2 of radius of curvature
= 1/2 X 30 = 15cm.

Solution 4

Focal point is the principal focus of the mirror where a parallel beam of light meets(or appear to meet) after reflection from the mirror.

Solution 5

Solution 6

(i). Pole is the centre of the reflecting surface, in this case spherical mirror.
(ii). Centre of curvature is the centre of the imaginary sphere to which the mirror belongs
(iii). Aperture is the distance between the extreme points on the periphery of the mirror.
(iv). Principal axis is the straight line passing through the pole and the centre of curvature.
(v) The principle focus of a spherical mirror may be defined as a point on its principle axis where a beam of light parallel to the principle axis converges to or appears to diverge from after reflection from the spherical mirror.

Solution 7

Convex mirror has a wider field of view.

Solution 8

Concave mirrors are used in reflecting microscope, in shaving and make up glasses and in ophthalmoscope.

Solution 9

Convex mirrors are used as a rear view mirror in automobiles as it provides a wider view of following traffic.

Solution 10

Convex mirror is used in vehicles to see the traffic following it.

Solution 11

The relationship between the focal length, f and radius of curvature, r is
f = X r.

Solution 12

Solution 13

Solution 14

Concave mirror can produce real and diminished image of the object.

Solution 15

The focal length of plane mirror is infinity.

Solution 16

The object should be placed between F and P to obtain its magnified and erect image.

Solution 17

Solution 18

Linear magnification is defined as the ratio of the height of the image to the height of the object. It is taken to be positive for an image to be virtual and erect and negative when image is real and inverted.
Magnification = height of image / height of object.

Solution 19

SI unit of focal length is meter.

Solution 20

The top mirror is convex mirror, the middle mirror is concave mirror and bottom mirror is a plane mirror.

Solution 21

The mirror having +15 cm as its focal length is a convex mirror because focal length is taken positive only in case of convex mirror.

Solution 22

The mirror having -20 cm as its focal length is a concave mirror because focal length is taken negative only in case of concave mirror.

Solution 23

When we look into a plane mirror, the image of our face is virtual because the image cannot be obtained on a screen.

Solution 24

When an object is brought towards the concave mirror, the position of the image moves away from the mirror and the size increases and it remains inverted but at object position between F and P, the image is virtual, magnified and erect.

Solution 25

Frank Modern Certificate Solution for Class 9 Physics Chapter 6 - Light - Spherical Mirrors Page/Excercise 259

Solution 26

Solution 27

Solution 28

Solution 29

Solution 30

TopperLearning provides step-by-step solutions for each question in each chapter in the Frank textbook recommended by ICSE schools. Access Chapter 6 - Light - Spherical Mirrors here. Our Frank Textbook Solutions for ICSE Class 9 Physics are designed by our subject matter experts. These solutions will help you to revise the whole chapter, so you can clear your fundamentals before the examination.

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