LED is constructed from G a - A s - P semiconducting material. The energy gap of this LED is 1 . 9 eV . Calculate the wavelength of light emitted and its colour. h = 6 . 63 × 10 - 34 J - s and c = 3 × 10 8 m s - 1

Question

LED is constructed from G a - A s - P semiconducting material. The energy gap of this LED is 1 . 9 eV . Calculate the wavelength of light emitted and its colour. h = 6 . 63 × 10 - 34 J - s and c = 3 × 10 8 m s - 1, 654 nm and red colour, 654 nm and orange colour, 1046 nm and red colour, 1046 nm and blue colour

MARKS App · Accepted Answer

λ = h c E = 6 . 6 × 10 - 34 × 3 × 10 8 1 . 9 × 1 . 6 × 10 - 19 = 6 . 54 × 10 - 7 = 654 nm Red color

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