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An LED is constructed from a p-n junction based on a certain semi-conducting material whose energy gap is 1.9 eV. Then, the wavelength of the emitted light is
Options
(a) 6.5×10⁻⁷ m
(b) 2.9×10⁻⁹ m
(c) 9.1×10⁻⁵ m
(d) 1.6×10⁻⁸ m
Correct Answer:
6.5×10⁻⁷ m
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two metallic spheres of radii 1 cm and 3 cm are given charges of -1 x 10⁻² C
- An astronomical telescope arranged for normal adjustment has a magnification of 6.
- Newton postulated his corpuscular theory on the basis of
- If particles are moving with same velocity, then maximum de Broglie wavelength will
- A body of mass m=3.513 kg is moving along the x-axis with a speed of 5 m/s
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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