Which of the following is not a part of an Electron Microscope? – McqOptions

MCQOPTIONS

1.	Which of the following is not a part of an Electron Microscope?
A.	Electron Gun
B.	Objective
C.	Magnetic lens
D.	Fluorescent Screen
Answer» C. Magnetic lens

Discussion

No Comment Found

Related MCQs

The component in an optical instrument used to increase the angular object field and to minimize aberrations is called as ___________
The refractive index of a Plano-convex lens is 1.6 for violet and 1.5 for red light. The radius of curvature is 0.20 cm. The separation between violet and red foci of the lens is ____________
If the magnification of a lens is dependent on the distance from the principal axis, the aberration that arises is called __________
The far point of a myopic person is 40 cm. What should be the power of the lens that he must use to see clearly?
The effective focal length of Ramsden s eyepiece is 3cm. The focal length of a single lens is ___________
Two lenses of focal length 8 cm and 6 cm are placed a certain distance apart. If they form an achromatic combination, the separation between them is ___________
A thin converging lens and a thin diverging lens of each focal length 10 cm are placed coaxially 5cm apart. What will be the focal length of the combination?
The condition in which lines in one direction appear to be well focused while those in perpendicular direction appear distorted is known as ___________
Which of the following is not a part of an Electron Microscope?
Huygens s eyepiece is also known as __________