Which of the following component of TEM focuses the beam of electrons on the sample?

Related MCQs

• A convergent beam is obtained by placing which of the following material between the X- ray source and the sample?
• The resolution attainable with standard TEM is less than the theoretical value.
• In TEM, the tissue is stained by floating on drops of                                               
• Which of the following methods utilizes the emission of low energy electrons in a process?
• Which of the following methods use soft X- rays to eject electrons from inner shell orbitals?
• The shifting of electrons in super conductors is prevented by                    
• The secondary electrons radiated back in scanning microscope is collected by?
• On what factors do the intensity of secondary electrons depend upon?
• During an experiment, accidently iodine got mixed up with a biological sample of proteins and polys. Identify the smallest colloid that can be obtained during the process of separation.
• In the powder method, in powder sample various                    samples are also present in every possible orientation.