Question

1- An object of 5 cm in height is 40 cm from a converging lens. It produces an inverted image which is found 30 cm from the lens. Find a) the focal length of the lens, b) the magnification, and c) the image height.

2-A laser of 632.8 nm (red) is incident on a rectangular glass container filled with water. Assume the glass is thin enough that we ignore the refraction it causes and only focus on the water. If the water has some impurities such that its index of refraction is 1.4, a) calculate the wavelength of the light inside the water, b) what color in the visible E&M part of the spectrum is this found, and c) if you view this experiment by standing over the table and looking at the water from above, the laser light still appears red. Why?

Answer #1

6) A converging lens with focal length 15 cm, a 10 cm object
locates at 30 cm from the lens, a) draw the picture and locate the
image, b) calculate the image distance and the image height. c)
calculate magnification, whether the image is smaller or larger, d)
whether the image is inverted or upright, real or virtual. Draw
picture
wave
7. What are the smallest thicknesses of a soap bubble that
produce constructive interference visible light of 380 nm...

An object of height 6.00 cm is placed 24.0 cm to the left of a
converging lens with a focal length of 10.5 cm. Determine the image
location in cm, the magnification, and the image height in cm.
(a) the image location in cm
(b) the magnification
(c) the image height in cm
(d) Is the image real or virtual?
(e) Is the image upright or inverted?

An object with a height of 3.0-cm is 48 cm in front of a
converging lens. If the focal length is 20 cm, the image is
________________ and has an image height of _______________.
upright, 2.1 cm
inverted, 2.1 cm
upright, 4.2 cm
inverted, 4.2 cm

A 1.8 cm tall object is placed 5 cm to the left of a converging
lens (lens #1) with a focal length of 1.3 cm. To the right of this
converging lens is a diverging lens (lens #2) that has a focal
length of 2.6 cm. The diverging lens is placed 22.4 cm from the
converging lens. Where is the final image, is it real or virtual,
and is it upright or inverted?

An object is held 82.7 cm away from a lens. The lens has
a focal length of -31 cm.
A.) Determine the image distance
B.) Determine the magnification.
C.) If the object is 4 cm long, determine the image
height
D.) Which of the following are true about the
image?
The image is virtual
the image is upright
the image is inverted
the image is real
E) Which is true about the lens?
The lens is concave
the lens is...

A diverging lens with a focal length of -15 cm and a converging
lens with a focal length of 15 cm have a common central axis. Their
separation is 12 cm. An object of height 1.0 cm is 10 cm in front
of the diverging lens, on the common central axis.
(a) Where does the lens combination produce the final image of
the object (the one produced by the second, converging lens)?
in cm
(b) What is the height of...

An object 2.00 cm high is placed 31.1 cm to the left of a
converging lens having a focal length of 26.1 cm. A diverging lens
having a focal length of −20.0 cm is placed 110 cm to the right of
the converging lens. (Use the correct sign conventions for the
following answers.)
(a) Determine the final position and magnification of the final
image. (Give the final position as the image distance from the
second lens.)
Find
final position in...

An optical instrument is built from a converging lens (lens 1)
with focal length 15 cm and a diverging lens (lens 2) with a focal
length -25 cm. The lenses are placed 20 cm apart. An object is
placed 10 cm from lens 1.
(a) (6 points) Compute the final image location of the
instrument. Report a distance from lens 2 with the correct
sign.
(b) (2 points) Compute the total magnification.
(c) (2 points) Describe the final image (magnification,...

An object 13 cm tall is located 37cm from a converging lens with
a focal length of 45cm. Find the location and height of the image,
and whether the image is upright or inverted, and whether it’s real
or virtual.

A converging lens, which has a focal length equal to 8.4 cm, is
separated by 30.5 cm from a second lens. The second lens is a
diverging lens that has a focal length equal to -13.7 cm. An object
is 16.8 cm to the left of the first lens.
(a) Find the position of the final image using both a ray
diagram and the thin-lens equation. __________cm to the right of
the object
(b) Is the final image real or...

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