00:01
Hello students, in this question first write what we have given in this question from the figure.
00:07
So for lens 1, we have focal length that is 12 centimeter and for u1, object distance.
00:19
So this will be minus 36 centimeter as from the figure.
00:24
Now to find the image distance using the relation that is f1 u1 upon f1 plus u1.
00:34
Now substituting the values here.
00:36
So we can write 12 into 36 divided by 12 plus 36.
00:48
36 is negative.
00:50
So after calculating, we get the image distance that is equal to 18.
00:58
So here 18 is a positive.
01:00
So this image will be real and inverted.
01:07
Now for lens 2.
01:14
So we have check distance that is minus 12 centimeter and focal length for this f2.
01:25
So this will be equal to 30 minus 36 that is equal to minus 6 centimeter...