What focal length lens should you prescribe

Reference no: EM13690750

Here is the problem which I am struggling on, please help me!

Problem: You are designing glasses for someone who is near point 60cm. What focal length lens should you prescribe so that an object. Can be clearly seen when placed at 25cm in front of the eye?

Please keep answer short and simple and please no copy and paste.

Reference no: EM13690750

Questions Cloud

What is the gravitational potential energy : Taking y = 0 at the top edge of the well, what is the gravitational potential energy of the stone Earth system before the stone is released

Calculate the volume of 0.20m of acetic acid : Question- Calculate the volume of 0.20M of acetic acid, .20M sodium acetate and pure water neede to maake 20.00mL of a buffer having pH=5.00. Repeat analogous, seperate calculations for buffers having pH=4.00 and pH=6.00.

What are the x- and y-coordinates of the shell : An artillery shell is fired with an initial velocity of 300 m/s at 55.0Â° above the horizontal. What are the x- and y-coordinates of the shell

Explain what is the ph of the unknown solution : Question- a ph meter reads 0.386 v when placed in a standard buffer of PH= 4.000. When placed in an unknown solution, the metter reads 0.498V. What is the PH of the unknown solution

What focal length lens should you prescribe : You are designing glasses for someone who is near point 60cm. What focal length lens should you prescribe so that an object

Draw the substitution products for the reaction : Question- Draw the substitution products for the following reaction, assuming that the reaction is carried out under SN2 conditions. If the products can exist as stereoisomers, show what stereoisomers are formed-

What is the maximum magnification of your microscope : You are building a compound microscope with an objective lens of focal length 1.40cm and an eyepiece lens of focal length 5.0 cm. You mount the lenses 18cm apart. What is the maximum magnification of your microscope

What frequency should be used : An AC series circuit contains a resistor of 20?, a capacitor of 0.75 ?F and an inductor of 120mH. What frequency should be used to create a resonance condition in the circuit

The dipole moment of formaldehyde : Question- The dipole moment of formaldehyde is approximately 2.3 Debyes, whereas the dipole moment of carbon monoxide is only approximately 0.1 Debyes. Give a brief explanation of this difference

User Account

All Pages