Question

[116]. Read the following passage carefully:

Passage: "On a clear winter night, the Moon looks larger near the horizon than high in the sky, though its actual size never changes. This is the Moon illusion: our brain compares the Moon with familiar objects like trees and houses near the horizon, and judges it bigger. High in the sky, with nothing nearby for comparison, the same Moon looks smaller. Astronomers measure the Moon's angular size and find it almost the same in both positions. The illusion teaches a useful lesson — what we see is not always what is measured, and our brain's comparisons can deceive us." How do astronomers test the illusion?

1.
By asking viewers.
2.
By photographing trees.
3.
By measuring the Moon's angular size in both positions.
4.
By waiting for winter.
Answer (Detailed Solution Below)

Option 3 : By measuring the Moon's angular size in both positions.

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Detailed Solution

सही उत्तर By measuring the Moon's angular size in both positions. है।

Key Points

Measurement shows the angular size is almost the same in both positions.

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Question:

[116]. Read the following passage carefully:

Passage: "On a clear winter night, the Moon looks larger near the horizon than high in the sky, though its actual size never changes. This is the Moon illusion: our brain compares the Moon with familiar objects like trees and houses near the horizon, and judges it bigger. High in the sky, with nothing nearby for comparison, the same Moon looks smaller. Astronomers measure the Moon's angular size and find it almost the same in both positions. The illusion teaches a useful lesson — what we see is not always what is measured, and our brain's comparisons can deceive us." How do astronomers test the illusion?

1.
By asking viewers.
2.
By photographing trees.
3.
By measuring the Moon's angular size in both positions.
4.
By waiting for winter.

Correct Answer: By measuring the Moon's angular size in both positions.

Measurement shows the angular size is almost the same in both positions.

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