If an astronomical telescope has the magnification of -31.0 ? and its objective lens has a...

If an astronomical telescope has the magnification of -31.0 ? and its objective lens has a focal length of 75 cm, what is the focal length of its eyepiece?
cm
What is the overall length of the telescope when adjusted for a relaxed eye?
cm

Expert Solution

Magnification M = -31

Focal length of objective f _o = 75 cm

Focal length of eye piece f _e = ?

We know M = f _o / f _e

From this f _e = f _o / M

= -2.419 cm

(b). The overall length of the telescope when adjusted for a relaxed eye L = f _o + f _e

= 77.41 cm

genius_generous answered 1 year ago

An inquiring student makes a refracting telescope by placing an objective lens and an eyepiece at...

An inquiring student makes a refracting telescope by placing an objective lens and an eyepiece at opposite ends of a 45.0 cm long tube. If the eyepiece has a focal length of 1.70 cm, calculate the required focal length in cm of the objective lens and the angular magnification of the telescope. HINT (a) the required focal length in cm of the objective lens cm (b) the angular magnification of the telescope

Magnification of a given lens.

What magnification will be produced by a lens of power –4.00 D (such as might be used to correct myopia) if an object is held 29 cm away?

1) Suppose you install an objective lens that gives the microscope a total magnification of 360x....

1) Suppose you install an objective lens that gives the microscope a total magnification of 360x. What is the total magnification of this objective lens? 2) Ocular and objective lenses are available in many different magnifications. Give at least two combinations of ocular and objective lenses that would each give a total magnification of 300x.

Given perfect lenses, what is the main reason that a telescope with a large-diameter objective lens...

Given perfect lenses, what is the main reason that a telescope with a large-diameter objective lens can produce a sharper image than one with a small-diameter lens? A larger lens can gather more light than a smaller lens. A larger lens has a longer focal length than a smaller lens. There is less diffraction with a larger lens than with a smaller lens. A larger lens can focus more accurately than a smaller lens. A larger lens can focus more...

11.) In a reflecting telescope, the light from the astronomical object is collected and focused by...

11.) In a reflecting telescope, the light from the astronomical object is collected and focused by the most important component which is a.) mirror b.) lens c.) collimator d.) camera holder Answer__________ 12.) Telescopes in low earth orbit have the advantage of a.) no atmospheric disturbances b.) visibility at all wavelengths c.) no scattering of city lights in the images d.) all of the above

an image is located -26.42cm from a concave lens. the magnification for this lens is 0.587....

an image is located -26.42cm from a concave lens. the magnification for this lens is 0.587. a) find the object distance. b) find the focal length

An astronomical telescope is being used to examine a relatively close object that is only 107.00...

An astronomical telescope is being used to examine a relatively close object that is only 107.00 m away from the objective of the telescope. The objective and eyepiece have focal lengths of 1.470 and 0.0900 m, respectively. Noting that the expression M = - fo/fe is no longer applicable because the object is so close, use the thin-lens and magnification equations to find the angular magnification of this telescope.

A microscope has a net magnification of -200. An object is .001 m from the objective....

A microscope has a net magnification of -200. An object is .001 m from the objective. If the objective has a focal length of 1x10-4 m, what must the focal length of the eyepiece be?

1. Describe the basics of an astronomical telescope using light-ray diagrams. 2. What is the formula...

1. Describe the basics of an astronomical telescope using light-ray diagrams. 2. What is the formula fr the magnification of an astronomical telescope made of lenses with focal lengths F_0 and F_e? Provide a brief, concise explanation; a drawing would help. 3. Describe the basics of a mircoscope using light-ray diagrams. 4. What is the basic difference between a telescope and a mircoscope and their constructions?

A certain microscope consists of an objective lens, (Lens 1), and a tube lens (Lens 2)....

A certain microscope consists of an objective lens, (Lens 1), and a tube lens (Lens 2). The object is placed at the front focal plane of the objective lens and the image is at the back focal plane of the tube lens. The tube lens has a focal length of 200mm. The objective is labeled 20X, which means that the magnification will be 20 when used with this particular tube lens. The working distance (the distance from the object to...

Question