Assertion :Heart pacemaker is a life saving device for the persons whose normal heart rate of 72-80 drops to 30-40 due to disease or some other cause. Reason: The pacemaker electrically stimulates the contractile heart walls.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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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 pacemaker is a medical device that uses electrical impulses, delivered by electrodes contacting the heart muscles, to regulate the heartbeat. The primary purpose of a pacemaker is to maintain an adequate heart rate, either because the heart's natural pacemaker is not fast enough or the other possible reason could be heart disease or block in the heart's electrical conduction system.

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