Microorganisms - Section 3 | Multiple Questions and Answers

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Microorganisms - Section 3 Multiple Questions and Answers.

16.	In Phase contrast microscopy, the rate at which light enters through objects is ?

	A.	Constant
	B.	Inversely proportional to their refractive indices
	C.	Directly proportional to their refractive indices
	D.	Exponentially related to their refractive indices

17.	Which part of the light microscope controls the intensity of light entering the viewing area?

	A.	Coarse adjustment screw
	B.	Fine adjustment screw
	C.	Diaphragm
	D.	Condenser lens

18.	Which of the following is used in electron microscope?

	A.	electron beams
	B.	magnetic fields
	C.	light waves
	D.	electron beams and magnetic fields

19.	Electron Microscope can give a magnification up to?

	A.	400,000X
	B.	100,000X
	C.	15000X
	D.	100X

20.	Degree of scattering in transmission electron microscope is a function of?

	A.	wavelength of electron beam used
	B.	number of atoms that lie in the electron path
	C.	number and mass of atoms that lie in the electron path
	D.	mass of atoms that lie in the electron path

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