A radio station broadcasts at a frequency of 400KHz. If the speed of the wave is 3.0 ×10-8 ms-1, calculate the wavelength of the radio wave.

A.

1.3 × 10²m

B.

3.0 × 10²m

C.

2.4 × 10²m

D.

5.0 × 10²m

E.

7.5 × 10²m

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Correct answer is E

No explanation has been provided for this answer.

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