Home Physics Wave Optics All Topic Question for Revision Test A parallel beam of fast - moving electrons i…
Physics Wave Optics All Topic Question for Revision Test MCQ (Single Correct)

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 statement is correct?

A
Diffraction pattern is not observed on the screen in the case of electrons.
B
The angular width of the central maximum of the diffraction pattern will increase.
C
The angular width of the central maximum will decrease.
D
The angular width of the central maximum will be unaffected.

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The correct answer is:
C

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