| ⇦ | 
| ⇨ |
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.
Related Questions: - A layer of colourless oil spreads on water surface. White light is incident on it
- The limiting angle of incidence for an optical ray that can be transmitted
- A car moving with a speed of 50 kmh⁻¹ can be stopped by brakes after at least 6 m
- The photoelectric threshold wevelength for potassium (work function being 2 eV) is
- A ray of light passes from a medium A having refractive index 1.6 to the medium
Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A layer of colourless oil spreads on water surface. White light is incident on it
- The limiting angle of incidence for an optical ray that can be transmitted
- A car moving with a speed of 50 kmh⁻¹ can be stopped by brakes after at least 6 m
- The photoelectric threshold wevelength for potassium (work function being 2 eV) is
- A ray of light passes from a medium A having refractive index 1.6 to the medium
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply