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An equiconvex lens is cut into two halves along (i) XOX' and (ii) YOY' as shown in the figure. Let f, f ', f '' be the focal lengths of the complete lens, of each half in case (i), and of each half in case (ii), respectively. [2003]
Choose the correct statement from the following
  • a)
    f ' = 2f, f '' = 2f
  • b)
    f ' = f, f '' = 2f
  • c)
    f ' = 2f, f '' = f
  • d)
    f ' = f, f '' = f
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
An equiconvex lens is cut into two halves along (i) XOX' and (ii) ...
In this case, R1 and R2 are unchanged
So, f will remain unchanged for both pieces
of the lens
∴ f = f '
This is combination of two lenses of equal
focal lengths
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An equiconvex lens is cut into two halves along (i) XOX' and (ii) YOY' as shown in the figure. Let f, f ', f '' be the focal lengths of the complete lens, of each half in case (i), and of each half in case (ii), respectively. [2003]Choose the correct statement from the followinga)f ' = 2f, f '' = 2fb)f ' = f, f '' = 2fc)f ' = 2f, f '' = fd)f ' = f, f '' = fCorrect answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about An equiconvex lens is cut into two halves along (i) XOX' and (ii) YOY' as shown in the figure. Let f, f ', f '' be the focal lengths of the complete lens, of each half in case (i), and of each half in case (ii), respectively. [2003]Choose the correct statement from the followinga)f ' = 2f, f '' = 2fb)f ' = f, f '' = 2fc)f ' = 2f, f '' = fd)f ' = f, f '' = fCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An equiconvex lens is cut into two halves along (i) XOX' and (ii) YOY' as shown in the figure. Let f, f ', f '' be the focal lengths of the complete lens, of each half in case (i), and of each half in case (ii), respectively. [2003]Choose the correct statement from the followinga)f ' = 2f, f '' = 2fb)f ' = f, f '' = 2fc)f ' = 2f, f '' = fd)f ' = f, f '' = fCorrect answer is option 'B'. Can you explain this answer?.
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