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In an electron microscope, the resolution that can be achieved is of the order of the wavelength of electrons used. To resolve a width of 7.5 m, the minimum electron energy required is close to :

(a)

100 keV

(b)

500 keV

(c)

25 keV

(d)

1 keV



Question ID - 50242 | SaraNextGen Top Answer

In an electron microscope, the resolution that can be achieved is of the order of the wavelength of electrons used. To resolve a width of 7.5 m, the minimum electron energy required is close to :

(a)

100 keV

(b)

500 keV

(c)

25 keV

(d)

1 keV

1 Answer
127 votes
Answer Key / Explanation : (c) -

=     

P=

KE= = = J

KE=25Kev

127 votes


127