Refer a friend and earn $50 when they subscribe to an annual planRefer Now

Get the answer to your homework problem.

Try Numerade Free for 30 Days

Like

Report

A pair of eyeglasses is designed to allow a person with a far-pointdistance of 2.50 $\mathrm{m}$ to read a road sign at a distance of 25.0 $\mathrm{m} .$ Findthe focal length required of these glasses if they are to be worn(a) 2.00 $\mathrm{cm}$ or ( b ) 1.00 $\mathrm{cm}$ from the eyes.

a) $-2.75 \mathrm{m}$b) $-2.765 \mathrm{m}$

Physics 103

Chapter 27

Optical lnstruments

Wave Optics

Simon Fraser University

University of Winnipeg

McMaster University

Lectures

02:51

In physics, wave optics is…

10:02

Interference is a phenomen…

02:04

The near point of a person…

02:50

02:00

A farsighted person has a …

02:16

Eye The image distance for…

04:14

The near point of an eye i…

02:14

A person sees clearly wear…

02:28

Prescribe glasses A man wh…

03:10

. The focal length of a si…

02:36

The focal length of a simp…

Okay, So in this problem, we have a person wearing glass at a distance diferent his ice. We know the disc glasses have a focal land such that we can see or project at a distance off 25 meters from his eyes. And these glasses produces an image of his far point. We know the Farpoint is just 2.5 meters because the problem gives us his information. Okay, so what we have to doing here, we need to calculate the first item, the focal length when we are using the glasses at a distance off too 70 meters from for for his ice. Okay, so we know that the distance off the object in the distance off the image needs to be calculated related to the glass is not to the ice. So since were, since he is using his glasses on a distance of two centimeters, we need to subtract zero point you two in here and 0.0 to in here. So, using the Finland's equation, which is one divided by zero plus one divided by the eye Oh, with the power of minus one, you can calculate now. So let's do this. The focal length. It's just going to be one divided by 25 miners, 0.0 tooth plus one divided by 2.5 minus 0.2 Remember Now we have to put a minor sign in front of the distance of the image on the rise. The calculation will be incorrect. All of this to the armor of minus one. Okay, so let's see. This result gives us minus two point 75 meters. That's the answer. So the first item, the second item and we need to calculate again the focal length. But this time we are using the glasses are a distance off once in team manager, away from his eyes. So I was going to be this same formula. But this time, if Alito change here 25 miners 0.1 loss, one divided by 2.5 minor zero points. You don't want from minor signing front. All this to the power off my nose Swan. So this needs to be equal to minus two point 77 meters, and that's final answer through this problem

View More Answers From This Book

Find Another Textbook

Numerade Educator

In physics, wave optics is the study of the behavior of light, or other elec…

Interference is a phenomenon in which two waves superpose to form a resultan…

The near point of a person's eye is $60.0 \mathrm{cm} .$ To see objects…

The near point of a person’s eye is 60.0 cm. To see objects clearly at a dis…

A farsighted person has a near point that is 67.0 cm from her eyes. She wear…

Eye The image distance for the lens of a person’s eye is 2.10 cm. Determine …

The near point of an eye is 75.0 cm. (a) What should be the power of a corre…

A person sees clearly wearing eyeglasses that have a power of -4.00 diopters…

Prescribe glasses A man who can produce sharp images on his retina only of o…

A person sees clearly wearing eyeglasses that have a power of 24.00 diopters…

. The focal length of a simple magnifier is 8.00 $\mathrm{cm} .$ Assume the …

The focal length of a simple magnifier is 8.00 cm. Assume the magnifier is a…

00:53

At resonance, the rms current in an RLC circuit is 5.8 A. If the rmsvolt…

01:59

Holographic Interferometry An interferometric hologram isproduced by exp…

03:01

A $115-\Omega$ resistor, a 67.6 -mH inductor, and a $189-\mu$ F capacitor ar…

06:33

$\because$ Predict/Calculate A beam of vertically polarized light encounters…

01:20

The current in a solenoid with 28 turns per centimeter is 0.55 $\mathrm{A}$ …

01:28

CE Predict/Explain You are in a spaceship, traveling directly away from the …

01:47

An essential part of modern dentistry is visible-light curing (VLC),a pr…

05:01

An arrow 2.00 $\mathrm{cm}$ long is located 75.0 $\mathrm{cm}$ from a lens t…

03:53

Bio Predict/Calculate Albert is nearsighted, and without his eyeglasses he c…

04:04

Predict/Calculate Newton's Rings Monochromatic light with$\lambda=6…

92% of Numerade students report better grades.

Try Numerade Free for 30 Days. You can cancel at any time.

Annual

0.00/mo 0.00/mo

Billed annually at 0.00/yr after free trial

Monthly

0.00/mo

Billed monthly at 0.00/mo after free trial

Earn better grades with our study tools:

Textbooks

Video lessons matched directly to the problems in your textbooks.

Ask a Question

Can't find a question? Ask our 30,000+ educators for help.

Courses

Watch full-length courses, covering key principles and concepts.

AI Tutor

Receive weekly guidance from the world’s first A.I. Tutor, Ace.

30 day free trial, then pay 0.00/month

30 day free trial, then pay 0.00/year

You can cancel anytime

OR PAY WITH

Your subscription has started!

The number 2 is also the smallest & first prime number (since every other even number is divisible by two).

If you write pi (to the first two decimal places of 3.14) backwards, in big, block letters it actually reads "PIE".

Receive weekly guidance from the world's first A.I. Tutor, Ace.

Mount Everest weighs an estimated 357 trillion pounds

Snapshot a problem with the Numerade app, and we'll give you the video solution.

A cheetah can run up to 76 miles per hour, and can go from 0 to 60 miles per hour in less than three seconds.

Back in a jiffy? You'd better be fast! A "jiffy" is an actual length of time, equal to about 1/100th of a second.