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in Physics by (25.0k points)
एक कृष्णिका से जो एक उच्च ताप T K पर है,E वाट/मीटर `""^(2 ) `ऊर्जा विकरित होती है। यदि ताप घट कर `(T//2)K`रह जाये,तो विकरित ऊर्जा (वाट/मीटर`""^(2 ) `में) होगी :
A. `E//2`
B. `E//4`
C. `E//16`
D. `2E`

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