A convex lens is made of a material having refractive index 1.2. If it is dipped into water (μ = 1.33), it will behave like :

To determine how a convex lens made of a material with a refractive index of 1.2 will behave when dipped into water with a refractive index of 1.33, we need to consider the concept of refraction.

1. Refraction is the bending of light as it passes from one medium to another with a different refractive index. The amount of bending depends on the refractive indices of the two media involved.

2. When light passes through a convex lens, it converges or focuses the light rays. The shape of the lens causes the light to bend towards the center.

3. The refractive index of a material determines how much the light will bend when passing through it. A higher refractive index means a greater bending of light.

4. In this case, the refractive index of the lens material is 1.2, while the refractive index of water is 1.33. Since the refractive index of water is higher than that of the lens material, the light rays passing through the lens will experience a greater bending when they enter the water.

5. Therefore, when the convex lens is dipped into water, it will behave like a stronger lens. The light rays passing through the lens will converge more, resulting in a greater focusing effect.

In summary, when a convex lens made of a material with a refractive index of 1.2 is dipped into water with a refractive index of 1.33, it will behave like a stronger lens, causing the light rays passing through it to converge more.