00:01
Hello student, here is an given question and the question says an object of 2 cm height is placed, okay? then the height of the object is given that is 2 centimeter, okay, is placed at a distance of 16 centimeter, means the u is equal to the minus of 16 centimeter is given from a concave mirror.
00:21
Here is a concave mirror, okay, concave mirror is given.
00:26
For this which produces 3 cm high inverted image means the height of the image is equal to the 3 centimeter and this is the inverted image okay inverted image okay now what is the focal length of the mirror we have to find out a focal length and also find out the position of the image b is equal to the how much okay now we know that we know okay what we know what we know what we know that from the magnification formula, the magnification, magnification m is equal to the h i by h0 is equal to the minus of v by u.
01:17
This is the hour finally.
01:20
Then we know that this is the magnification m is equal to what is the h i? h i is equal to the 3 cm.
01:30
Okay.
01:30
And this is inverted, that's why we can take this in negative and divided by what is the s not, that is 2 centimeter.
01:38
That means the magnetification am will comes out of a minus of 3 by 2.
01:43
Now, this is equal to the minus of b by 2.
01:47
That means, that means the v minus of v by u is equal to the minus of 3 by 2.
01:56
That means the v will come south to be, okay, and what is the u, u, u is equal to 3 by 2 and multiplied by the u? and what is the u, v is equal to 3 by 2 and multiplied by? what is the u, u is minus 16, minus of 16 centimeters...