What an object is placed 8 mm from a concave spherical mirror a clear image can be projected on the screen 16 mm in front of me to add you to the height of 4 mm the height of the image is

Concept: The magnification of spherical mirror can be defined by two ways.

(i) In terms of the height of the object and image.

The magnification of the spherical mirror is defined as the ratio of the height of the image'' to the height of the object ''. It is denoted by letter 'm'.

Mathematically, it can be written as

(ii) In terms of the object's and image's distances.

The magnification of the spherical mirror is defined as the negative ratio of the image distance'' to the object distance ''.

Mathematically, it can be written as

Now, from equation (1) and (2) we have,

Given: Spherical Concave Mirror,

We will consider positive sign for object's and image's distance because both are in front of the mirror.

Object distance .

Image distance

Object's height

Image's height

Now, apply equation (3)

Or, hi = - 8 mm

Here; negative sign means, the image will be inverted.

The image's height will be 8 mm.

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answer; equivalent to a one(1) horsepower motor;