What is the effect of the lens on the magnification of an optical instrument?

The lens affects the magnification of an optical instrument by bending the light rays.

The magnification of an optical instrument is determined by the focal length of the lens. A lens with a shorter focal length will produce a larger magnification than a lens with a longer focal length. This is because a shorter focal length lens bends the light rays more, resulting in a larger image.

The magnification of an optical instrument can also be affected by the distance between the lens and the object being viewed. If the object is placed closer to the lens, the magnification will be greater. This is because the light rays are bent more as they pass through the lens, resulting in a larger image.

However, the magnification of an optical instrument is not solely determined by the lens. The eyepiece of the instrument also plays a role in magnification. The eyepiece acts as a magnifying glass, further enlarging the image produced by the lens. The magnification of the eyepiece is determined by its focal length, with a shorter focal length resulting in a larger magnification.

In summary, the lens affects the magnification of an optical instrument by bending the light rays, but the magnification is also influenced by the distance between the lens and the object being viewed, as well as the focal length of the eyepiece.