Match the columns. POSITION OF THE OBJECT IN FRONT OF A CONCAVE MIRROR NATURE OF THE IMAGE 1 . At infinity a. Real, inverted and diminished 2 . Between F and P b. Real, inverted and enlarged 3 . Beyond C c. Real, inverted and highly diminished 4 . Between C and F d. Real, inverted and same size as the object 5 . At C e. Virtual, erect and enlarged

1 . At infinity c. Real, inverted and highly diminished Explanation If the position of the object in front of a concave mirror is at infinity, then the image is real, inverted and highly diminished or point size at focus. 2 . Between F and P e. Virtual, erect, and enlarged Explanation If the position of the object in front of a concave mirror is between F and P, then a virtual, erect, and enlarged image is formed behind the mirror. This is the reason concave mirror used as shaving mirror. 3 . Beyond C a. Real, inverted and diminished Explanation If the position of the object in front of a concave mirror is beyond C, then a real, inverted and diminished image is formed in between F and C. 4 . Between C and F b. Real, inverted and enlarged Explanation If the position of the object in front of a concave mirror is between C and F, then a real, inverted and enlarged image is formed beyond C. 5 . At C d. Real, inverted and same size as the object Explanation If the position of the object in front of a concave mirror is at C, then a real, inverted and same size image is formed at C. Thus, the correct match is, POSITION OF THE OBJECT IN FRONT OF A CONCAVE MIRROR NATURE OF THE IMAGE 1 . At infinity c. Real, inverted and highly diminished 2 . Between F and P e. Virtual, erect and enlarged 3 . Beyond C a. Real, inverted and diminished 4 . Between C and F b. Real, inverted and enlarged 5 . At C d. Real, inverted and same size as the object

The area of the mirror from which reflection takes place is called its aperture. The length of the straight line joining two opposite extreme points on the periphery of a mirror is called linear aperture, and th e angle subtended by the two opposite extreme points of the periphery of a mirror at the centre of curvature is called the angular aperture. Note: The aperture basically denotes the size of the mirror.

The distance between the pole and the principal focus is called the focal length of the spherical mirror. It is denoted by letter f . It is half the distance of the radius of the curvature R . Relation between radius of curvature and the focal length is f = R 2 .

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Living Science Physics 8>Chapter 5 - Light Energy>Exercises>Q C

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The angle through which the incident ray is deviated by the prism is called the angle of deviation.

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Important Questions on Light Energy

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Living Science Physics 8>Chapter 5 - Light Energy>Exercises>Q C

A rainbow is formed because water droplets of the atmosphere behave like glass slabs.

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Living Science Physics 8>Chapter 5 - Light Energy>Exercises>Q D

Match the columns.

POSITION OF THE OBJECT IN FRONT OF A CONCAVE MIRROR	NATURE OF THE IMAGE
$1$ . At infinity	a. Real, inverted and diminished
$2$ . Between F and P	b. Real, inverted and enlarged
$3$ . Beyond C	c. Real, inverted and highly diminished
$4$ . Between C and F	d. Real, inverted and same size as the object
$5$ . At C	e. Virtual, erect and enlarged