問題詳情
19. How does the intensity of radiation changes with the distance r from the source? Let d bothe spatial dimension.
(A) proportional to
(B)proportional to
(C)proportional to
(D) proportional to
(E) none of the above.
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
難度：計算中-1
書單：沒有書單，新增