Question
A parallel beam of fast moving electrons is incident normally on a narrow slit. A fluorescent screen is placed at a large distance from the slit. If the speed of the electrons is increased, then which of the following statements is correct ?
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Diffraction pattern is not observed on the screen in the case of electrons.
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The angular width of the central maximum of the diffraction pattern will increase
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The angular width of the central maximum will decrease
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The angular width of the central maximum will be unaffected
Solution
B.
The angular width of the central maximum of the diffraction pattern will increase
