An object is held 16.6 cm away from alens. The lens has a focallength of -56.3cm.

a.) Determine the image distance.

b.) Determine the magnification.

c.) If the object is 1.4 cm long,determine the image height.

d.) Which of the following are true about the image? Choose allthatapply.

The image is upright.
The image is virtual.
The image is real.
The image is inverted.

e.) Which of the following are true about the lens? Choose allthatapply.
The lens is concave.
The lens is diverging.
The lens is convex.
The lens is converging.

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Irving HeathcoteLv2

26 Nov 2019

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Related questions

If you are told an image has been made by a singleoptic(either a lens or a mirror) that has apositivefocal length, which of the following mustbe true? Choose all thatapply
1 The image is real.
2 The image is virtual.
3 The image has a positive image distance.
4 The image has a negative image distance.
5 The image is inverted.
6 The image is upright.
7 The image was made with a converging optic.
8 The image was made with a diverging optic.
9 If the optic is a lens, it is convex.
10 If the optic is a lens, it is concave.
11 If the optic is a mirror, it is convex.
12 If the optic is a mirror, it is concave

An object is held 9.8 cm away from amirror. The mirror has a focallength of 14.7 cm.

a.) Determine the image distance.
1 cm

b.) Determine the magnification.
2

c.) If the object is 2 cm long, determinethe image height.
3 cm

d.) Which of the following are true aboutthe image? Choose all thatapply.

The image is upright. Theimage is real. The image is inverted.Theimage is virtual.

e.) Which of the following are trueabout the mirror? Choose allthat apply.

The mirror is converging.The mirror is concave.The mirror isconvex. Themirror is diverging.

In the diagram below the capacitor has a capacitance of79Î¼F and the inductor has an inductance of 66 mH.Initiallythe capacitor has a voltage of 17 V. This circuit hasnoresistance.

A. How much charge does the capacitorinitiallyhave?
1 C

B. How much energy does the capacitorinitiallyhave?
2 J

C. What is the maximum current that willpassthrough the inductor?
3 A

Response Details:

a. Charge Q = C*V

= 79*10^-6 * 17

= 1.343*10^-3C

b. Enegy storedinthecapacitor U = (1/2)*C * V²

= 0.5*79 * 10^-6 * 17²

= 1.14*10^-2J

c. Maximumenergyinindcutor = U

(1/2)*L*I_max²= 1.14*10^-2 0.5 * 66*10^-3*I_max²= 1.14*10^-2

I_max= â(1.14*10^-2 / 3.30 * 10^-2)

= 0.5877 A

An object is held 99.5 cm away from a mirror. The mirror hasafocal length of 72.9 cm.

a.) Determine the image distance.
1 cm

b.) Determine the magnification.
2

c.) If the object is 9.8 cm long, determine the image height.
3 cm

d.)Which of the following are true about the image? Choose allthatapply.

The image is virtual. The image isupright. The image isinverted. The image isreal.

e.)Which of the following are true about the mirror? Choose allthatapply.

The mirror is concave. The mirror isconvex. The mirror isconverging. The mirror isdiverging.

Answer:

a) The image distance

q = pf / p -f =99.5*72.9 / 99.6-72.9 = 272.69cm

(b) Magnification m = -q/p = -272.69 / 99.5 =-2.74

(c) magnification m = hf /hi

-2.74 = hf /9.8

hf = -26.85cm

(d) for lens image is realandinverted

(e) ???