Amicroscope has an objective lens with a focal length of 1.82 mm. the lenses are 47.8 cm apart what should the focal length of the eyepice be if i want the microscope to have an angular magnifica tion of -2000?

focal length of eye lens is 3.28 cm

Explanation:

As we know that the magnification of the microscope is given by the formula

now we will have

D = 25 cm

M = 2000

now we need to solve above equation to find focal length of eye lens

so here we will have

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.