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Consider a  laser cavity consisting of two mirrors of reflectivity R1 = 1 and R2 = 0.98. The mirrors are separated by a distance d = 20 cm and the medium in between has a refractive index n0 = 1 and absorption coefficient a = 0. The values of the separation between the modes and the width  of each mode of the laser cavity are -
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Consider alaser cavity consisting of two mirrors of reflectivity R1 = ...
Here, from question, Separation of mirror (d) = 20cm = 20 x 10-2 m and Refractive index (no) = 1 are given.
Now, the values of the separation between the modes  is given as,

And width of each mode of laser cavity is,
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Consider alaser cavity consisting of two mirrors of reflectivity R1 = 1 and R2 = 0.98.The mirrors are separated by a distance d = 20 cmand the medium in between has a refractive index n0 = 1and absorption coefficient a = 0.The values of the separation between the modesand the widthof each mode of the laser cavity are -a)b)c)d)Correct answer is option 'B'. Can you explain this answer?
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Consider alaser cavity consisting of two mirrors of reflectivity R1 = 1 and R2 = 0.98.The mirrors are separated by a distance d = 20 cmand the medium in between has a refractive index n0 = 1and absorption coefficient a = 0.The values of the separation between the modesand the widthof each mode of the laser cavity are -a)b)c)d)Correct answer is option 'B'. Can you explain this answer? for UGC NET 2025 is part of UGC NET preparation. The Question and answers have been prepared according to the UGC NET exam syllabus. Information about Consider alaser cavity consisting of two mirrors of reflectivity R1 = 1 and R2 = 0.98.The mirrors are separated by a distance d = 20 cmand the medium in between has a refractive index n0 = 1and absorption coefficient a = 0.The values of the separation between the modesand the widthof each mode of the laser cavity are -a)b)c)d)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UGC NET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider alaser cavity consisting of two mirrors of reflectivity R1 = 1 and R2 = 0.98.The mirrors are separated by a distance d = 20 cmand the medium in between has a refractive index n0 = 1and absorption coefficient a = 0.The values of the separation between the modesand the widthof each mode of the laser cavity are -a)b)c)d)Correct answer is option 'B'. Can you explain this answer?.
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