Objectives for higher magnification are usually longer than those for lower magnification ...
The magnification of the telescope image is(focal length of the objective) divided by (focal length of the eyepiece).The focal length of the objective is fixed.Decreasing the focal length of the eyepiece increases the magnification of the image.(But it also makes the image dimmer.)
no change
Because the length of the objectives depends on the total magnification. Example: Magnification: 50x (LPO) You can see that the lower the magnification,the length of objective is the smallest. Magnification: 500x (HPO) You can see that the higher the magnification, the length of objective is bigger than the other objectives. If the objective is lower, the number is lesser -Guinean026
no, because this happens only in the cases of lenses
Divide the focal length of the objective lens by the focal length of the eyepiece.
The magnification of a telescope M is the the focal length of the objective Fo over the focal length of the eyepiece Fe so increasing the focal length of the objective increases the magnification. The magnification of a microscope M is approximately tube length L/Fo x 25/Fe. Therefore increasing the focal length of the objective reduces the magnification.
Yes, the numerical aperture of an objective lens is influenced by both its focal length and the refractive index of the medium it is used in. A higher numerical aperture typically corresponds to a shorter focal length, allowing for greater resolution and light-gathering ability.
The muscle length will not change during a contraction.
The telescope tube is between the eyepiece and the objective lenses. It usually consists of two tubes one of which slides inside the other to change the length.
The magnification of the telescope image is(focal length of the objective) divided by (focal length of the eyepiece).The focal length of the objective is fixed.Decreasing the focal length of the eyepiece increases the magnification of the image.(But it also makes the image dimmer.)
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The focal length of the objective lens in a microscope is important because it determines the magnification and resolution of the microscope. A shorter focal length results in higher magnification but lower resolution, while a longer focal length provides lower magnification but higher resolution. Therefore, the choice of objective lens focal length is crucial in achieving the desired balance between magnification and resolution in microscopy.