The resolution attainable with a standard transmission electron microscope (TEM) is indeed less than the theoretical value. While theoretical resolution is determined by the wavelength of the electrons (which can be extremely small and thus capable of achieving very high resolution), practical limitations, such as imperfections in lenses, electron source stability, and specimen preparation, often reduce the achievable resolution.
Thus, the attainable resolution in real-world TEM applications is typically less than the theoretical ideal.
Correct Answer: (a) True