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JEE Main 2019 Physics question

PhysicsDual Nature of Matter and RadiationJEE Main 2019

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 m, the minimum electron energy required is close to:

Answer: (A)

Solution

\dfrac{h^2}{2mλ^2}\dfrac{(6.6×10^{-34})^2}Extra open brace or missing close brace{2(9.1×10^{-31}$

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Question ID VK-010668