D

Deepika • 5.41K Points
Tutor III Physics

Q. रेडियो सक्रिय पदार्थ उत्सर्जित करता है-

(A) अल्फ़ा किरणें
(B) बीटा किरणें
(C) गामा किरणें
(D) उपरोक्त सभी
Correct Answer - Option (D)

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