<prompt> Resolution power of light microscope is2nm20 nm200 nm2000 nm  <response>: Ans :c 200 nmThe resolving power of light microscope is limited by the wave length of light. With visible light, using the best optical system, the limit of resolution is 200- 300 nm.Extra points: Wavelength of electron in Electron microscope- 0.0005nm Resolving power of electron microscope -1 nm Reflected light rather than transmitted light is med in Dark field dark ground microscope 