The resolving power of electron microscope is much greater than that of the optical microscope. Why?

An electron microscope uses electron accelerated by a voltage of 50kV. Determine the de-Broglie wavelengths associated with the electrons. If other factors (such as numerical aperture etc) are taken to be roughly the same how does the resolving power of electron microscope compare with that of an optical microscope which uses yellow light?

Define resolving power of compound microscope.

Explain with reasons,how the resolving power of a compound microscope will change when aperture of the objective lens is increased.

In which year electron microscope was invented ?

Define resolving power of a compound microscope. How does the resolving power of a compound microscope change when wavelength of radiation used is increased.

A compound microscope uses an objective lens of focal length 4 cm and eyepiece lens of focal length 10 cm. An object is placed at 6 cm from the objective lens. Calculate the magnifying power of the compound microscope. Also calculate the length of the microscope.

For relaxed eye,magnifying power of a microscope is