Wavelength of light of frequency 100 Hz

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Wavelength of light of frequency 100 Hz

1. 2 × 10⁶ m
2. 3 × 10⁶ m
3. 4 × 10⁶ m
4. 5 × 10⁶ m

Correct Option: B

Frequency (n) = 100 Hz
v = n λ

λ =	3 × 10⁸
	100

[where, velocity of light (v) = 3 × 10⁸ m/s]
λ = 3 × 10⁶ m