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Assertion A pulsar is a source of radio ...

Assertion A pulsar is a source of radio waves that varies in intensity at regular intervals
Reason A pulsar is a rotating neutron star

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

B

Both Assertion and Reason are true but Reason is not a correct explanation of Assertion

C

Assertion is true but Reason is false

D

Assertion is false but Reason is true

Text Solution

AI Generated Solution

The correct Answer is:
To solve the given question, we need to analyze both the assertion and the reason provided. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "a pulsar is a source of radio waves that varies in intensity at regular intervals." - Pulsars are indeed known to emit radio waves, and these emissions occur in pulses at very regular intervals. This is a characteristic feature of pulsars. 2. **Understanding the Reason**: - The reason states that "a pulsar is a rotating neutron star." - This is accurate. A pulsar is a type of neutron star that emits beams of electromagnetic radiation out of its magnetic poles. As it rotates, these beams sweep across space, and if they align with Earth, we detect them as pulses. 3. **Evaluating the Truth of Both Statements**: - Both the assertion and the reason are true statements. - The assertion correctly describes the behavior of pulsars, and the reason correctly identifies what a pulsar is. 4. **Determining the Relationship**: - The reason provides a correct explanation for the assertion. A pulsar's ability to emit radio waves at regular intervals is due to its nature as a rotating neutron star. 5. **Conclusion**: - Since both the assertion and the reason are true, and the reason correctly explains the assertion, the correct answer to the question is that both the assertion and reason are true, and the reason is the correct explanation of the assertion. ### Final Answer: The correct option is **A**: Both assertion and reason are true, and the reason is the correct explanation of the assertion. ---
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