सूर्य की किरणों की तीव्रता – McqOptions

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1.	सूर्य की किरणों की तीव्रता मापनेवाले उपकरण को क्या कहते हैं?
A.	बेरौमीटर
B.	क्रेसकोग्राफ
C.	एस्ट्रोमीटर
D.	एक्टिओमीटर
Answer» E.

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