00:01
Hi everyone, we have a question in which this is given that we have a convex mirror which is used for the rear view of an automobile having a radius of curvature of 3 meter.
00:10
This means in the question this is given we have a convex mirror which is having a radius of curvature of 3 meter radius of curvature which is represented by r.
00:24
Now since this is for a convex mirror so it will be on the right side of the mirror.
00:30
So we can say that it will come with a positive sign from the sign convention.
00:34
So it is 3 meter.
00:36
Now this is also given in the question.
00:39
We have a bus which is located at a 5 meter from the mirror.
00:42
That means object distance is also given.
00:45
Object distance is also given in the question.
00:47
Object distance which is represented by u is also given.
00:52
Now since object will be placed on the left side of the mirror.
00:55
So it will come with a negative sign.
00:57
That means minus of 5 meters since it will be on the left side of the mirror.
01:00
Now from the radius of the curvature what we can do, we can find the focal length of the mirror.
01:05
F focal length, which is represented by f, is equals to r by 2.
01:15
Now r by 2, which is nothing, it is equals to plus of 1 .5 meter.
01:20
Okay.
01:21
Now, what we want to find, we want to find the size of the image.
01:25
In this question, we want to find the size of image.
01:29
Okay.
01:30
Now for finding the size of image, size of image, this we want to find in this question.
01:38
Now let us understand how can we do this part.
01:42
Now for this, let's imagine, let's say, let's say size of object...