The focal length of a simple magnifier

Reference no: EM13663452

The focal length of a simple magnifier is 7.00 cm. Suppose the magnifier to be a thin lens placed very close to the eye.

a) How far in front of the magnifier must an object be placed if the image is formed at the observer's near point, 25.0 cm in front of her eye?

b) If the object is 2.70 mm high, what is the height of its image formed with the magnifier?

Reference no: EM13663452

Questions Cloud

Slits are illuminated with coherent light by a wavelength : Two slits spaced 0.445 mm apart are placed 55.0 cm from a screen. What is the distance among the second and third dark lines of the interference pattern on the screen when the slits are illuminated with coherent light by a wavelength of 540 nm?

Two radio antennas radiate in phase : Two radio antennas A and B radiate in phase. Antenna B is 160 m to the right of antenna A. Think about point Q along the extension of the line connecting the antennas, a horizontal distance of 55 m to the right of antenna B.

Index of refraction were twice the value of the original : How would it affect the image distance? What if the index of refraction were twice the value of the original? What happens to an image if the index of refraction is switched to one that is half of the original value?

What is the overall angular magnification of the microscope : The focal length of the eyepiece of a certain microscope is16.0 mm. The focal length of the objective is 7.00 mm. The distance among the objective and eyepiece is 19.7 cm. The final image formed with the eyepiece is at infinity. Treat all lenses as t..

The focal length of a simple magnifier : The focal length of a simple magnifier is 7.00 cm. Suppose the magnifier to be a thin lens placed very close to the eye. How far in front of the magnifier must an object be placed if the image is formed at the observer's near point, 25.0 cm in front ..

Extremely thin film of soapy water-what is thickness of film : An extremely thin film of soapy water (n = 1.26) sits on top of a flat glass plate with n =1.51. The soap film has a red color when viewed at normal incidence. What is the thickness of the film? (Wavelength of red, or lambda = 640nm.)

Solid sphere of uniform density has a mass : A solid sphere of uniform density has a mass of 9.0 ×104 kg and a radius of 2.7 m. What is the magnitude of the gravitational force due to the sphere on a particle of mass 9.6 kg located at a distance of (a) 8.1 m and (b) 1.2 m from the center of the..

What is the oscillation amplitude : A mass on a spring has an angular oscillation frequency of 2.56rad/s. The spring constant is 27.2 N/m, and the system's kinetic energy is 4.47J when t = 1.56 s. Suppose that φ = 0.00. What is the oscillation amplitude?

What is the charge in electrical potential energy : A proton moves 68 cm on a path parallel to the direction of a uniform electric field of strength 2.8 N/C. What is the charge in electrical potential energy?

User Account

All Pages