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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
- The earth radiates in the infrared region of the spectrum. The spectrum is correctly
- If seperation between screen and source is increased by 2%. What would be the effect
- Two charges placed in air repel each other by a force of 10⁻⁴ N. When oil is
- Under the action of a force F=cx, the position of a body changes from 0 to x.The work done
- A charge of 40 µC is given to a capacitor having capacitance C=10 µF
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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