A radio wave has a wavelength of 300 m. What is its frequency? (Speed of light = 3.0 × 10⁸ m/s)

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Question

A radio wave has a wavelength of 300 m. What is its frequency? (Speed of light = 3.0 × 10⁸ m/s)

Accepted Answer

A. 1.0 × 10⁶ Hz — Using v = fλ, rearranged to f = v/λ: f = (3.0 × 10⁸) / 300 = 1.0 × 10⁶ Hz. Option B results from multiplying speed by wavelength rather than dividing. Option C is a powers-of-ten arithmetic error. Option D arises from incorrectly halving the wavelength before dividing.

Answer

A. 1.0 × 10⁶ Hz

Answer

C. 1.0 × 10³ Hz

Answer

D. 3.0 × 10⁶ Hz

Answer

B. 9.0 × 10¹⁰ Hz

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