Question

A 750 × microscope uses a 0.45-cm-focal-length objective lens. If the tube length is 17.1 cm , what is the focal length of the eyepiece? Assume a normal eye and that the final image is at infinity, fe≪l.

Express your answer to two significant figures and include the appropriate units.

Answer #1

The eyepiece of a compound microscope has a focal length of 2.90
cm , and the objective lens has f = 0.720 cm . An object is placed
0.810 cm from the objective lens. Assume a normal eye and that the
final image is at infinity.
a)Calculate the distance between the lenses when the microscope
is adjusted for a relaxed eye.
Express your answer to two significant figures and include the
appropriate units.
b)Calculate the total magnification.
Express your answer...

The tube length in compound microscope is 26 cm. The focal
length of the objective lens is 2 cm. The clearest image is formed
when an object of height 1 mm is placed at a distance of 2.18 cm
from the objective lens. Determine: 1. The position of the
intermediate image, 2. the focal length of the eye piece, that will
place the final image at the near-point, 3. the total magnification
of the microscope and the height of the...

The focal length of the objective lens in a microscope is 0.270
cm, and an object is placed 0.275 cm from the objective.
a. How far from the objective lens will the objective image be
formed?
b. If the image of this object is viewed with the eyepiece
adjusted for minimum eyestrain (image at the far point of the eye)
for a person with normal vision. What is the needed focal length of
the eyepiece lens if the distance between...

1. The focal lengths of the objective and the eyepiece of a
microscope are 0.50 cm and 2.0 cm, respectively, and their
separation adjusted for minimum eyestrain (with the final image at
the viewer's far point) is 6.0 cm. The near point of the person
using the microscope is 25 cm and the far point is infinity.
a. If the microscope is focused on a small object, what is the
distance between the object and the objective lens?
b. If...

A 15-cm-focal-length converging lens is 19 cm to the right of a
7.0-cm-focal-length converging lens. A 1.6-cm-tall object is
distance L to the left of the first lens.
For what value of L is the final image of this two-lens system
halfway between the two lenses?
Express your answer to two significant figures and include the
appropriate units.
What is the height of the final image?
Express your answer to two significant figures and include the
appropriate units.
What is...

Please explain, walkthrough, and show equations.
The focal length of the objective lens in a microscope is 0.270
cm, and an object is placed 0.275 cm from the objective.
a. How far from the objective lens will the objective image be
formed?
b. If the image of this object is viewed with the eyepiece
adjusted for minimum eyestrain (image at the far point of the eye)
for a person with normal vision. What is the needed focal length of
the...

A compound microscope consists of two converging lenses: an
objective lens, and an eyepiece placed 15 cm behind it. The
microscope magnifies a tiny object 0.25 cm in front of the
objective lens, forming an enlarged final image at the near point N
= 25 cm of a normal human eye.
Part A) The focal length of the eye piece is fe =
5 cm. Neglecting the distance between the human eye and
the eyepiece, what is the focal length fo...

The tube length in a certain compound microscope is 25
cm. The focal length of the objective lens is 2.1 cm. The clearest
image is formed when an object of height 1 mm is placed at a
distance of 2.3 cm from the objective lens. Determine: (i) The
position of the intermediate image, (ii) the focal length of the
eye piece, that will place the final image at the near-point, (iii)
the total magnification of the microscope and the height...

A 15-cm-focal-length converging lens is 19 cm to the right of a
7.0-cm-focal-length converging lens. A 1.6-cm-tall object is
distance L to the left of the first lens.
Part A
For what value of L is the final image of this two-lens system
halfway between the two lenses?
Express your answer to two significant figures and include the
appropriate units.
L
L
=
Part B
What is the height of the final image?
Express your answer to two significant figures...

Determine the lens separation and object location for a
microscope made from an objective lens of focal length +1.1-cm and
an eyepiece of focal length +4.0-cm. Arrange the lenses so that a
final virtual image is formed 100 cm to the left of the eyepiece
and so that the angular magnification is -260 for a person with a
near point of 25.
B:Determine the distance between the objective lens and the
eyepiece. Express your answer with the appropriate units.
Answer...

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