Which of the Following Has the Most Light-Gathering Power

question 8

Multiple Choice

Which of the following has the most light-gathering power?

• A) a telescope of 5 centimetres diameter and focal length of 50 centimetres
• B) a telescope of 6 centimetres diameter and focal length of 100 centimetres
• C) a telescope of 2 centimetres diameter and focal length of 100 centimetres
• D) a telescope of 3 centimetres diameter and focal length of 75 centimetres

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Definitions:

Distributed Practice

Spacing the study of material to be remembered by including breaks between study periods.

Cramming

An intensive, short-term study technique characterized by long hours of continuous study just before an exam.

Spacing Studying

The practice of distributing learning sessions or practice over time, rather than condensing them into short blocks, to improve long-term memory retention.

Hindsight Bias

The tendency to believe, after an event has occurred, that one would have predicted or expected the event, often referred to as the "I-knew-it-all-along" phenomenon.