The charge of B is +3 and the charge of O is -2. What is its formula?
2 answers:
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The smallest observable object for an electron microscope is 6.6nm.
<h3>Calculation of smallest observable object for an electron microscope :</h3>Given,
Speed of electron (u) = 5.5 x 10⁴ m/s
De Broglie's formula,
wavelength, λ =h/mu
where,
h = Planck's constant = 6.626 x Js
m = mass of electron, 9.11 x kg
λ =h/mu
= 6.626 x Js /9.11 x
kg x 5.5 x 10⁴ m/s
= 0.132 x m
= 13.2 x m
It is well known that the smallest thing that can be observed under any microscope is identical to the radiation's wavelength for the smallest object that can be seen under an electron microscope.
Therefore, 13.2 x m/2
= 6.6 x m
= 6.6 nm
Hence, the smallest observable object for an electron microscope is 6.6nm.
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