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Two coherent monochromatic point sources S1 and S2 of wavelength λ = 600 nm are placed symmetrically on either side of the center of the circle as shown. The sources are separated by a distance d = 1.8mm. This arrangement produces interference fringes visible as alternate bright and dark spots on the circumference of the circle. The angular separation between two consecutive bright spots is Δθ. Which of the following options is/are correct ?
  • a)
    A dark spot will be formed at the point P2
  • b)
    The angular separation between two consecutive bright spots decreases as we move from P1 to P2 along the first quadrant
  • c)
    At P2 the order of the fringe will be maximum
  • d)
    The total number of fringes produced between P1 and P2 in the first quadrant is close to 3000
Correct answer is option 'C,D'. Can you explain this answer?
Verified Answer
Two coherent monochromatic point sources S1 and S2 of wavelength &lamb...
At point P2; Δ x = d = 1.8 mm = 3000 λ hence a (bright fringe) will be formed at P2
Now,

Δθ increases as θ  decreases At P2, the order of fringe will be maximum.
For total no. of bright fringes d = nλ
⇒  n = 3000
∴ total no. of fringes = 3000
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Two coherent monochromatic point sources S1 and S2 of wavelength λ = 600 nm are placed symmetrically on either side of the center of the circle as shown. The sources are separated by a distance d = 1.8mm. This arrangement produces interference fringes visible as alternate bright and dark spots on the circumference of the circle. The angular separation between two consecutive bright spots is Δθ. Which of the following options is/are correct ?a)A dark spot will be formed at the point P2b)The angular separation between two consecutive bright spots decreases as we move from P1 to P2 along the first quadrantc)At P2 the order of the fringe will be maximumd)The total number of fringes produced between P1 and P2 in the first quadrant is close to 3000Correct answer is option 'C,D'. Can you explain this answer?
Question Description
Two coherent monochromatic point sources S1 and S2 of wavelength λ = 600 nm are placed symmetrically on either side of the center of the circle as shown. The sources are separated by a distance d = 1.8mm. This arrangement produces interference fringes visible as alternate bright and dark spots on the circumference of the circle. The angular separation between two consecutive bright spots is Δθ. Which of the following options is/are correct ?a)A dark spot will be formed at the point P2b)The angular separation between two consecutive bright spots decreases as we move from P1 to P2 along the first quadrantc)At P2 the order of the fringe will be maximumd)The total number of fringes produced between P1 and P2 in the first quadrant is close to 3000Correct answer is option 'C,D'. 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 Two coherent monochromatic point sources S1 and S2 of wavelength λ = 600 nm are placed symmetrically on either side of the center of the circle as shown. The sources are separated by a distance d = 1.8mm. This arrangement produces interference fringes visible as alternate bright and dark spots on the circumference of the circle. The angular separation between two consecutive bright spots is Δθ. Which of the following options is/are correct ?a)A dark spot will be formed at the point P2b)The angular separation between two consecutive bright spots decreases as we move from P1 to P2 along the first quadrantc)At P2 the order of the fringe will be maximumd)The total number of fringes produced between P1 and P2 in the first quadrant is close to 3000Correct answer is option 'C,D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two coherent monochromatic point sources S1 and S2 of wavelength λ = 600 nm are placed symmetrically on either side of the center of the circle as shown. The sources are separated by a distance d = 1.8mm. This arrangement produces interference fringes visible as alternate bright and dark spots on the circumference of the circle. The angular separation between two consecutive bright spots is Δθ. Which of the following options is/are correct ?a)A dark spot will be formed at the point P2b)The angular separation between two consecutive bright spots decreases as we move from P1 to P2 along the first quadrantc)At P2 the order of the fringe will be maximumd)The total number of fringes produced between P1 and P2 in the first quadrant is close to 3000Correct answer is option 'C,D'. Can you explain this answer?.
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