The Objective and the Eyepiece of a Refracting Astronomical Telescope $320 \mathrm {~cm}$

question 55

Multiple Choice

The objective and the eyepiece of a refracting astronomical telescope have focal lengths of $320 \mathrm {~cm}$ and $4.0 \mathrm {~cm}$ , respectively. The telescope is used to view Neptune and the final image is set at infinity. The diameter of Neptune is $4.96 \times 10 ^ { 7 } \mathrm {~m}$ , and its distance from Earth at the time of observation is $4.4 \times 10 ^ { 12 } \mathrm {~m}$ . What is the angle (in milliradians) subtended by the final telescopic image of Neptune?

• A) \(1.1 \mathrm { mrad }\)
• B) \(1.3 \mathrm { mrad }\)
• C) \(1.5 \mathrm { mrad }\)
• D) \(0.90 \mathrm { mrad }\)
• E) \(1.7 \mathrm { mrad }\)

Grasp the historical development and roles of international institutions such as the International Monetary Fund and the Bretton Woods system.

Understand the concepts and economic implications of currency devaluation and revaluation.

Recognize the significance and calculation of the balance of payments and its components.

Understand the factors leading to the collapse of the Bretton Woods system and its consequences on global financial systems.

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