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Assertion : Parallax method cannot be u...

Assertion : Parallax method cannot be used for measuring distance of stars morer then 100 light year away.
Reason : Because parallax angle reduces so much that it cannot be measured accurately.

A

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

B

If both , Assertion and Reason are true but Reason is not a correct explanation of the Assertion.

C

If Assertion is true but the Reason is false.

D

If both, Assertion and Reason are false.

Text Solution

Verified by Experts

The correct Answer is:
(a)
Parallax angle `theta =(I)/(r ).` As distance of star (r ) increases, `theta` reduces. Measurement becomes inaccurate.
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