Concept explainers
(a)
The refractive power of the corrective eyeglass lens to enable the man to clearly see distant objects.
(a)
Answer to Problem 30P
The refractive power of the corrective eyeglass lens to enable the man to clearly see distant objects is
Explanation of Solution
Refractive power of a lens is the reciprocal of its focal length.
Here,
Write the lens equation.
Here,
Put equation (II) in equation (I).
Conclusion:
To clear distant objects, the object distance of the lens should be infinity.
Given that the man cannot see objects farther than
Find the image distance of the lens.
Substitute
Therefore, the refractive power of the corrective eyeglass lens to enable the man to clearly see distant objects is
(b)
The near point of the man can see clearly with and without his glasses.
(b)
Answer to Problem 30P
The near point of the man with his glasses is
Explanation of Solution
Use equation (III) to find the refractive power of eye.
Here,
Substitute
It is given that the power of accommodation of the eye is
Find the refractive power of the eye using the accommodation.
Here,
Rewrite equation (I) for
Put equation (I) in the above equation.
Replace
Write the equation for the refractive power of the eye with the glasses.
Here,
Substitute
Find the refractive power of the eye with the glasses using the accommodation.
Here,
Replace
Conclusion:
Substitute
Substitute
Therefore, the near point of the man with his glasses is
Want to see more full solutions like this?
Chapter 24 Solutions
Physics
- air is pushed steadily though a forced air pipe at a steady speed of 4.0 m/s. the pipe measures 56 cm by 22 cm. how fast will air move though a narrower portion of the pipe that is also rectangular and measures 32 cm by 22 cmarrow_forwardNo chatgpt pls will upvotearrow_forward13.87 ... Interplanetary Navigation. The most efficient way to send a spacecraft from the earth to another planet is by using a Hohmann transfer orbit (Fig. P13.87). If the orbits of the departure and destination planets are circular, the Hohmann transfer orbit is an elliptical orbit whose perihelion and aphelion are tangent to the orbits of the two planets. The rockets are fired briefly at the depar- ture planet to put the spacecraft into the transfer orbit; the spacecraft then coasts until it reaches the destination planet. The rockets are then fired again to put the spacecraft into the same orbit about the sun as the destination planet. (a) For a flight from earth to Mars, in what direction must the rockets be fired at the earth and at Mars: in the direction of motion, or opposite the direction of motion? What about for a flight from Mars to the earth? (b) How long does a one- way trip from the the earth to Mars take, between the firings of the rockets? (c) To reach Mars from the…arrow_forward
- No chatgpt pls will upvotearrow_forwarda cubic foot of argon at 20 degrees celsius is isentropically compressed from 1 atm to 425 KPa. What is the new temperature and density?arrow_forwardCalculate the variance of the calculated accelerations. The free fall height was 1753 mm. The measured release and catch times were: 222.22 800.00 61.11 641.67 0.00 588.89 11.11 588.89 8.33 588.89 11.11 588.89 5.56 586.11 2.78 583.33 Give in the answer window the calculated repeated experiment variance in m/s2.arrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON