A Pair of Radio Dishes,each with Collecting Area 100 M²,lie

question 17

Multiple Choice

A pair of radio dishes,each with collecting area 100 m²,lie a distance of 10 km from each other.With them,astronomers can make a measurement with an effective collecting area of ________ and an effective angular resolution of a telescope with a ________ diameter.

• A) 10⁸ m²; 200 m
• B) 10⁸ m²; 200 m.
• C) 200 m²; 10 km
• D) 200 m²; 10 km.

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Definitions:

Coastal Accumulations

The build-up of sedimentary materials, such as sand and gravel, along coastlines due to oceanic and tidal movements.

Shallow

relating to an area of water that is not deep.

Narrow Islands

Long, slim landforms surrounded by water, often formed by volcanic activity or the buildup of sediment.

Clasts

Fragments or grains of mineral or rock detached from its original position and included within another rock.