JEE Main 2008 — Dual Nature of Matter Question with Solution
JEE Main 2008
Question
Paragraph:
Wave property of electrons implies that they will show diffraction effects. Davisson and Germer demonstrated this by diffracting electrons from crystals. The law governing the diffraction from a crystal is obtained by requiring that electron waves reflected from the planes of atoms in a crystal interfere constructively (see in figure).
Question: In an experiment, electrons are made to pass through a narrow slit of width 'd' comparable to their de Broglie wavelength. They are detected on a screen at a distance ' ' from the slit (see figure).
Which of the following graph can be expected to represent the number of electrons ' ' detected as a function of the detector position ' ' corresponds to the middle of the slit)?
Question: In an experiment, electrons are made to pass through a narrow slit of width 'd' comparable to their de Broglie wavelength. They are detected on a screen at a distance ' ' from the slit (see figure).
Which of the following graph can be expected to represent the number of electrons ' ' detected as a function of the detector position ' ' corresponds to the middle of the slit)?
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Diffraction pattern will be wider than the slit.
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Dual Nature of Matter chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2008, covering the Dual Nature of Matter chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.