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 given the behavior of the parallel rays of light incident on it? A) The black box must contain a concur lens. B) The black box must contain a convex lens. C) The black box must contain a concave mirror. D) The black box must contain a convex mirror. E) The black box must contain a plane mirror. Which of the following has the smallest energy? A) gamma rays B) infrared C) microwaves D) radio waves E) ultraviolet F) visible light

Explanation / Answer

Answer

B.1)

A) the black box must contain concave lens as light rays are diverging.

B.2)

D) radio waves have smallest energy as they have least frequency.

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