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Consider the following statements:
- If the lens is immersed in a medium having refractive index equal to that of the lens, then it behaves as a concave lens.
- If the lens is immersed in a medium having refractive index equal to that of the lens, then it becomes invisible.
- If the lens is immersed in a medium having refractive index equal to that of the lens, then its focal length becomes half.
Choose the correct option:
- a)Only I is correct.
- b)Only II is correct.
- c)Only III is correct.
- d)All are correct.
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Consider the following statements: If the lens is immersed in a medium...
Ans: b
Explanation: If the lens is immersed in a medium having refractive index equal to that of the lens, then
The lens becomes invisible.
The lens behaves as a plane glass plate.
The focal length becomes infinite.
Most Upvoted Answer
Consider the following statements: If the lens is immersed in a medium...
Explanation:
Statement I: If the lens is immersed in a medium having a refractive index equal to that of the lens, then it behaves as a concave lens.
This statement is incorrect. The behavior of a lens does not depend on the refractive index of the medium in which it is immersed. It depends on the shape and curvature of the lens itself. A concave lens will always behave as a concave lens, regardless of the refractive index of the medium.
Statement II: If the lens is immersed in a medium having a refractive index equal to that of the lens, then it becomes invisible.
This statement is incorrect. The visibility of an object does not depend on the refractive index of the medium in which it is immersed. It depends on the interaction of light with the object and the medium. Even if the refractive index of the medium is equal to that of the lens, the lens will still be visible.
Statement III: If the lens is immersed in a medium having a refractive index equal to that of the lens, then its focal length becomes half.
This statement is incorrect. The focal length of a lens is determined by its shape and curvature, not by the refractive index of the medium in which it is immersed. The refractive index of the medium affects the speed of light, but it does not directly affect the focal length of the lens.
Therefore, only Statement II is correct. The correct option is (b) Only II is correct.
Statement I: If the lens is immersed in a medium having a refractive index equal to that of the lens, then it behaves as a concave lens.
This statement is incorrect. The behavior of a lens does not depend on the refractive index of the medium in which it is immersed. It depends on the shape and curvature of the lens itself. A concave lens will always behave as a concave lens, regardless of the refractive index of the medium.
Statement II: If the lens is immersed in a medium having a refractive index equal to that of the lens, then it becomes invisible.
This statement is incorrect. The visibility of an object does not depend on the refractive index of the medium in which it is immersed. It depends on the interaction of light with the object and the medium. Even if the refractive index of the medium is equal to that of the lens, the lens will still be visible.
Statement III: If the lens is immersed in a medium having a refractive index equal to that of the lens, then its focal length becomes half.
This statement is incorrect. The focal length of a lens is determined by its shape and curvature, not by the refractive index of the medium in which it is immersed. The refractive index of the medium affects the speed of light, but it does not directly affect the focal length of the lens.
Therefore, only Statement II is correct. The correct option is (b) Only II is correct.
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Consider the following statements: If the lens is immersed in a medium having refractive index equal to that of the lens, then it behaves as a concave lens. If the lens is immersed in a medium having refractive index equal to that of the lens, then it becomes invisible. If the lens is immersed in a medium having refractive index equal to that of the lens, then its focal length becomes half.Choose the correct option:a) Only I is correct.b) Only II is correct.c) Only III is correct.d) All are correct.Correct answer is option 'B'. Can you explain this answer?
Question Description
Consider the following statements: If the lens is immersed in a medium having refractive index equal to that of the lens, then it behaves as a concave lens. If the lens is immersed in a medium having refractive index equal to that of the lens, then it becomes invisible. If the lens is immersed in a medium having refractive index equal to that of the lens, then its focal length becomes half.Choose the correct option:a) Only I is correct.b) Only II is correct.c) Only III is correct.d) All are correct.Correct answer is option 'B'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements: If the lens is immersed in a medium having refractive index equal to that of the lens, then it behaves as a concave lens. If the lens is immersed in a medium having refractive index equal to that of the lens, then it becomes invisible. If the lens is immersed in a medium having refractive index equal to that of the lens, then its focal length becomes half.Choose the correct option:a) Only I is correct.b) Only II is correct.c) Only III is correct.d) All are correct.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements: If the lens is immersed in a medium having refractive index equal to that of the lens, then it behaves as a concave lens. If the lens is immersed in a medium having refractive index equal to that of the lens, then it becomes invisible. If the lens is immersed in a medium having refractive index equal to that of the lens, then its focal length becomes half.Choose the correct option:a) Only I is correct.b) Only II is correct.c) Only III is correct.d) All are correct.Correct answer is option 'B'. Can you explain this answer?.
Consider the following statements: If the lens is immersed in a medium having refractive index equal to that of the lens, then it behaves as a concave lens. If the lens is immersed in a medium having refractive index equal to that of the lens, then it becomes invisible. If the lens is immersed in a medium having refractive index equal to that of the lens, then its focal length becomes half.Choose the correct option:a) Only I is correct.b) Only II is correct.c) Only III is correct.d) All are correct.Correct answer is option 'B'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements: If the lens is immersed in a medium having refractive index equal to that of the lens, then it behaves as a concave lens. If the lens is immersed in a medium having refractive index equal to that of the lens, then it becomes invisible. If the lens is immersed in a medium having refractive index equal to that of the lens, then its focal length becomes half.Choose the correct option:a) Only I is correct.b) Only II is correct.c) Only III is correct.d) All are correct.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements: If the lens is immersed in a medium having refractive index equal to that of the lens, then it behaves as a concave lens. If the lens is immersed in a medium having refractive index equal to that of the lens, then it becomes invisible. If the lens is immersed in a medium having refractive index equal to that of the lens, then its focal length becomes half.Choose the correct option:a) Only I is correct.b) Only II is correct.c) Only III is correct.d) All are correct.Correct answer is option 'B'. Can you explain this answer?.
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