Difficulty: Easy
Correct Answer: Both convert light energy to electrical energy.
Explanation:
Introduction / Context:
The passage compares the human eye with a television camera to explain how vision works. It explains that both devices transform light energy into another form of energy that can be processed further. The question asks precisely what kind of transformation both the eye and the television camera perform according to the text.
Given Data / Assumptions:
Concept / Approach:
This is a comprehension question that tests the understanding of an analogy. The eye is compared to a television camera to show that both work as converters of one form of energy into another. The approach is to read the part of the passage that begins with “The eye is similar to a television camera” and to extract the key phrase that describes their common function.
Step-by-Step Solution:
Verification / Alternative check:
From basic physics, we know that sight involves conversion of light stimuli into electrical signals in the nervous system. Television technology also uses photoelectric conversion to change light into electronic signals. Therefore, both science and the literal passage support option b. The other options add mechanical elements not mentioned in the text and not relevant to the eye or the television camera in this context.
Why Other Options Are Wrong:
Common Pitfalls:
Test takers may get distracted by unfamiliar phrases or may guess based on partial memories of physics. Some may think of mechanical analogies for focusing or movement of the eye. The correct strategy is to rely on the explicit wording in the passage and choose the option that exactly matches it without adding extra concepts.
Final Answer:
Both convert light energy to electrical energy. is the correct answer because the passage clearly states that this is the common feature linking the human eye and a television camera.
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