The Objective and the Eyepiece of a Refracting Astronomical Telescope

question 2

Multiple Choice

The objective and the eyepiece of a refracting astronomical telescope have focal lengths of 320 cm and 4.0 cm,respectively.The telescope is used to view Neptune and the final image is set at infinity.The diameter of Neptune is 4.96  107 m and the distance from Earth at the time of observation is 4.4  1012 m.The angle subtended by the final telescopic image of Neptune,in m rad,is closest to:

• A)0.9
• B)1.1
• C)1.3
• D)1.5
• E)1.7

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The method used by a company to establish the price and quantity of production that generates the maximum profit.

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