The frequency of light ray having the wavelength 3000Å is

The Frequency Of Light Ray Having The Wavelength 3000 Is Physics QuestionThe Frequency Of Light Ray Having The Wavelength 3000 Is Physics Question

The frequency of light ray having the wavelength 3000Å is

Options

(a) 9×10¹³ cycle/sec
(b) 10¹⁵ cycle/sec
(c) 90 cycle/sec
(d) 3000 cycle/sec

Correct Answer:

10¹⁵ cycle/sec

Explanation:

n = v / λ = 3 × 10⁸ / 3000 × 10⁻¹° = 10¹⁵ cycle/sec.

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