1a. The distance of an object and its image is 20cm. A lens has a focal point of -30cm. Calculate the object distance, describe the image, and construct a ray diagram for the lens (not in scale).
1b. A 0.8Kg microphone is connected to a spring and is oscillating in simple harmonic motion up and down with a period of 3s. Below the microphone there is a source of sound with a frequency of 550Hz. Knowing that the change...
An object is placed 12 cm in front of a diverging lens with a
focal length of 7.9 cm.
(a) Find the image distance and determine whether the image is
real or virtual.
(b) Find the magnification
A diverging lens has a focal length of -30.0cm. Located the
images for object distances of (a) 60.0cm (b) 30.0cm (c) 15.0cm.
What kind of images are they (real or virtual; upright or
inverted)? (d) Draw a ray diagram for part (a).
The distance between an object and its image formed by a
diverging lens is 51.7 cm. The focal length of the lens is -235
cm.
a.) Find the image distance
b.) Find the object distance.
The distance between an object and its image formed by a
diverging lens is 8.20 cm. The focal length of the lens is -3.70
cm. Find (a) the image distance and
(b) the object distance.
For converging and diverging lens types:
a. Explain what the “focal length” of a lens is.
b. What is the difference between converging and diverging lenses?
c. What is the relationship between the object distance and the image distance for a lens?
a convex lens has a focal length f. if an object is
placed at a distance beyond 2f from the lens on the principle axis,
the image is located at a distance from the lens
1.20cm tall object is 50.0cm to the left of a diverging lens
(lens 1) of focal length of magnitude 40.0cm. A second converging
lens (lens 2) of focal length 60.0cm, is located 300cm to the right
of the first lens along the same optic axis.
(a)Calculate the location of the image (call it I1) formed by
the lens1.
(b) Is image I1 real or virtual?
(c) Is image I1 on left side or right side of lens 1?
(d) Calculate...
A 1.0-cm-tall object is 100 cm from a screen. A diverging lens
with focal length -20 cm is 20 cm in front of the object.
a. What is the focal length of a second lens that will produce a
well-focused, 2.0-cm-tall image on the screen?
b. What is the distance from the screen of the second lens?