1)A convex lens is used to obtain an enlarged virtual image.
false.
2)The lens of the eye has a fixed focal length.
false.
1)I change my answer to true
The lens of the eye actually has an adjustable focal length. This allows the eye to focus on objects at different distances by adjusting the shape of the lens. This is known as accommodation.
1) How to determine the answer: Understanding the properties of convex lenses will help determine if statement 1 is true or false. Convex lenses are thicker at the center and thinner at the edges. They are known for their ability to converge light, which means they can form both real and virtual images. However, to obtain an enlarged virtual image, a concave lens is typically used, not a convex lens. So, the statement is true.
2) How to determine the answer: Analyzing the structure and function of the eye will help determine if statement 2 is true or false. The lens of the eye, specifically the crystalline lens, is responsible for changing its shape to focus light on the retina, allowing us to see clearly at various distances. The ability of the lens to adjust its focal length is called accommodation. Because the lens can change its shape and, therefore, its focal length, the statement is false.