1.

(A): The distance of a star from earth can be measured by parallax method. (R): The change in position of an object due to change in the point of observation iscalled parallax.

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Both (A) and (R) are TRUE and (R) is the correct explanation of (A)
Both (A) and (R) are true and (R) is not the correct explanation of (A)
(A) is true but (R) is FALSE
Both (A) and (R) are false

Answer :A


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