A diverging lens is a lens that causes light rays to spread out or diverge. It is thicker at the edges and thinner in the middle. From the given options, option 1 (i) is the correct answer.

Option 1 (i) states that the first glass lens is a diverging lens. This means that when light passes through this lens, the rays of light will spread out or diverge.

To understand why option 1 is correct, we need to look at the other options as well. Option 2 (ii), option 3 (iii), and option 4 (iv) are not diverging lenses.

Option 2 (ii) states that the second glass lens is not a diverging lens. This means that the light rays passing through this lens will not spread out or diverge.

Option 3 (iii) states that the third glass lens is not a diverging lens. This means that the light rays passing through this lens will not spread out or diverge.

Option 4 (iv) states that the fourth glass lens is not a diverging lens. This means that the light rays passing through this lens will not spread out or diverge.

Therefore, the correct answer is option 1