Assertion :A pulsar is a source of radio waves which change intensity at regular interval of time Reason: A pulsar is a rotating neutron star
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion A pulsar is a source of radio wave (a star) in the universe which change the intensity at regular interval of time due to rotation. So both assertion & reason are true & reason explains assertion.