Check the practices which will increase a telescope's magnification.

increase eyepiece focal length
increase objective focal length
decrease objective focal length
decrease eyepiece focal length
decrease aperture

decrease eyepiece focal length

Explanation:

the magnification of a telescope is dependent on the telescope's main objective lens focal length and eyepiece focal length.

magnification is usually calculated by dividing the focal length of the objective lens by the eyepiece focal length.

the shorter the eye piece the greater the magnification

for example when using a telescope of focal length of 600mm and eyepieces of 8mm and 24 mm. an eyepiece focal length of 8mm will give a magnification of 75 times while that of 24mm will give a magnification of 25 times

therefore, the shorter the eyepiece the larger the magnification.

are their multiple choices ?

explanation:

in physics zero. in muscle fatigue could be high