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(A) 1.98 x 10 J (B) 2.98 x 10 J U ).00 TV The frequency of a wave is 6 x 10' S-. Its wave number would be: (A) 10 cm (B)2 10 cm '(C) 2 x 10-7 cm (D) 2 x 10 cm avoie indend

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