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JEE PHYSICS MCQ: UNITS & MEASUREMENTS

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Assertion : Parallex method cannot be used for measuring distances of stars more than 100 light years away.

Reason : Because parallex angle reduces so much that it cannot be measured accurately.

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Correct option: A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

Option A (If both assertion and reason are true and the reason is the correct explanation of the assertion) is correct because the parallax angle becomes too small to measure accurately for distant stars.

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