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A parallel beam of fast moving electrons isincident normally on a narrow slit. A fluorescentscreen is placed at a large distance from the slit.If the speed of the electrons is increased, whichof the following statements is correct ?              [NEET 2013]
  • a)
    The angular width of the central maximumof the diffraction pattern will increase.
  • b)
    The angular width of the central maximumwill decrease.
  • c)
    The angular width of the central maximumwill be unaffected.
  • d)
    Diffraction pattern is not observed on thescreen in case of electrons.
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A parallel beam of fast moving electrons isincident normally on a narr...
If the speed will increase then the angular width of central maximum will decrease as speed is inversely proportional to wavelength, so as wavelength decreases the angular width also decreases.
angular width =wavelength/distance between the slits.
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A parallel beam of fast moving electrons isincident normally on a narrow slit. A fluorescentscreen is placed at a large distance from the slit.If the speed of the electrons is increased, whichof the following statements is correct ? [NEET 2013]a)The angular width of the central maximumof the diffraction pattern will increase.b)The angular width of the central maximumwill decrease.c)The angular width of the central maximumwill be unaffected.d)Diffraction pattern is not observed on thescreen in case of electrons.Correct answer is option 'B'. Can you explain this answer?
Question Description
A parallel beam of fast moving electrons isincident normally on a narrow slit. A fluorescentscreen is placed at a large distance from the slit.If the speed of the electrons is increased, whichof the following statements is correct ? [NEET 2013]a)The angular width of the central maximumof the diffraction pattern will increase.b)The angular width of the central maximumwill decrease.c)The angular width of the central maximumwill be unaffected.d)Diffraction pattern is not observed on thescreen in case of electrons.Correct answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A parallel beam of fast moving electrons isincident normally on a narrow slit. A fluorescentscreen is placed at a large distance from the slit.If the speed of the electrons is increased, whichof the following statements is correct ? [NEET 2013]a)The angular width of the central maximumof the diffraction pattern will increase.b)The angular width of the central maximumwill decrease.c)The angular width of the central maximumwill be unaffected.d)Diffraction pattern is not observed on thescreen in case of electrons.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A parallel beam of fast moving electrons isincident normally on a narrow slit. A fluorescentscreen is placed at a large distance from the slit.If the speed of the electrons is increased, whichof the following statements is correct ? [NEET 2013]a)The angular width of the central maximumof the diffraction pattern will increase.b)The angular width of the central maximumwill decrease.c)The angular width of the central maximumwill be unaffected.d)Diffraction pattern is not observed on thescreen in case of electrons.Correct answer is option 'B'. Can you explain this answer?.
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