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From Young's modulus experiment, monochromatic light is used to illuminate the two slits A and B. Alternate bright and dark fringes are observed on a screen placed in front of the slits. Now, if a thin glass plate is placed normally in the path of the beam coming from the slits, then
  • a)
    the fringe width will increase
  • b)
    the fringe width does not change
  • c)
    the fringe width will decrease
  • d)
    the fringes will disappear
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
From Youngs modulus experiment, monochromatic light is used to illumin...
Explanation:

Interference Fringes:
- When monochromatic light is used to illuminate the two slits A and B, interference fringes are observed on the screen placed in front of the slits.
- These fringes are caused by the interference of light waves coming from the two slits.

Effect of Thin Glass Plate:
- When a thin glass plate is placed normally in the path of the beam coming from the slits, there will be no change in the fringe width.
- This is because the glass plate causes a phase change in the light waves passing through it, but it does not affect the path length difference between the waves coming from the two slits.
- As a result, the interference pattern remains unchanged, and the fringe width does not alter.
Therefore, the correct answer is option 'B' - the fringe width does not change.
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Community Answer
From Youngs modulus experiment, monochromatic light is used to illumin...
Due to insertion of glass plate, the entire fringe pattern shifts due to refraction of light; the fringe width does not change.
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From Youngs modulus experiment, monochromatic light is used to illuminate the two slits A and B. Alternate bright and dark fringes are observed on a screen placed in front of the slits. Now, if a thin glass plate is placed normally in the path of the beam coming from the slits, thena)the fringe width will increaseb)the fringe width does not changec)the fringe width will decreased)the fringes will disappearCorrect answer is option 'B'. Can you explain this answer?
Question Description
From Youngs modulus experiment, monochromatic light is used to illuminate the two slits A and B. Alternate bright and dark fringes are observed on a screen placed in front of the slits. Now, if a thin glass plate is placed normally in the path of the beam coming from the slits, thena)the fringe width will increaseb)the fringe width does not changec)the fringe width will decreased)the fringes will disappearCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about From Youngs modulus experiment, monochromatic light is used to illuminate the two slits A and B. Alternate bright and dark fringes are observed on a screen placed in front of the slits. Now, if a thin glass plate is placed normally in the path of the beam coming from the slits, thena)the fringe width will increaseb)the fringe width does not changec)the fringe width will decreased)the fringes will disappearCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for From Youngs modulus experiment, monochromatic light is used to illuminate the two slits A and B. Alternate bright and dark fringes are observed on a screen placed in front of the slits. Now, if a thin glass plate is placed normally in the path of the beam coming from the slits, thena)the fringe width will increaseb)the fringe width does not changec)the fringe width will decreased)the fringes will disappearCorrect answer is option 'B'. Can you explain this answer?.
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