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Introduction to Cell

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an electron microscopeis operated at 40kV. The ratio of resolving power of this microscope and a compund microscopewhich uses yellow light of wavelength 6×10-7m is?

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Q. An electron microscope is operated at

40 K v

. The ratio of resolving power of this microscope and another one which uses yellow light of wavelength

6 \times 10^{7}

Q. The resolving power of an electron microscope operated at 16 kV is R. The resolving power of the electron microscope when operated at 4 kV is

Q. In an electron microscope, electrons accelerated by a voltage of

50 kV

are used. In an optical microscope of the same aperture, yellow light of wavelength

5900 ˚ A

is used. The resolving power of the electron microscope will be

n

times higher than that of the optical microscope, where

n

is of the order of

Q. An electron microscope uses electrons accelerated by a voltage of 50 kV. Determine the de-Broglie wavelength associated with the electrons. Taking other factors, such as numerical aperture etc. to be same, how does the resolving power of an electron microscope compare with that of an optical microscope which uses yellow light?

(λ_{y} = 5.9 \times 10^{- 7} m)

Q. When an object is viewed using light of wavelength

6000 ˚ A

under a microscope, the resolving power of the microscope is

10^{4}

. Find the resolving power of the microscope, when the same object is viewed using light of wavelength

4000 ˚ A

?

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