Assertion [A]: Alpha rays gets attracted towards the negatively charged plate.
Reason [R]: Alpha ray is negatively charged.

(A) and (R) both are correct and (R) is correct explanation of (A) .

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(A) and (R) both are correct but (R) is not the correct explanation of (A).

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(A) is correct but (R) is not correct.

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(A) is not correct but (R) is correct.

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Solution

The correct option is C (A) is correct but (R) is not correct.
Alpha rays consist of particles which have two protons and two neutrons identical to a positively charged helium nucleus. They get attracted towards the negatively charged plate as they possess a charge of +2. They have very high ionization power.

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Assertion [A]: Alpha rays gets attracted towards the negatively charged plate. Reason [R]: Alpha ray is negatively charged.

Assertion [A]: Alpha rays gets attracted towards the negatively charged plate.
Reason [R]: Alpha ray is negatively charged.