In a Telescope, compared to the eyepiece lens the objective lens has

In a telescope, the objective lens is designed to collect as much light as possible from distant objects to form a bright image. Therefore, it must have a large aperture.

The magnifying power of a telescope in normal adjustment is given by $M = \dfrac{f_o}{f_e}$, where $f_o$ is the focal length of the objective and $f_e$ is the focal length of the eyepiece. To achieve high magnification, the focal length of the objective lens must be much larger than that of the eyepiece.

Thus, the objective lens has a larger focal length and a larger aperture compared to the eyepiece lens.

Answer: larger focal length and larger aperture