Which of the following statements best describes the optical element hidden by t

Question

Which of the following statements best describes the optical element hidden by the black box in the diagram? A) The black box must contain a concave lens. B) The black box must contain a convex lens. C) The black box must contain a plain sheet of glass. D) None of the other statements is true. Which of the following statements best describes the optical element hidden by the black box in the diagram? A) The black box must contain a concave mirror. B) The black box must contain a convex mirror. C) The black box must contain a plane mirror. D) None of the other statements is true.

Explanation / Answer

7) For a convex lens, if the object is placed at the focus, the image is formed at infinity

option (B) is the correct answer

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8) Option (D) is the correct answer

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