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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
- In one dimensionsal motion,instantaneous speed v statisfies 0⦤v⦤vₒ
- Consider two nuclei of the same radioactive nuclide. One of the nuclei was created
- A bar magnet of pole strength 10 A-m is cut into two equal parts breadthwise.
- The self induced e.m.f. in a 0.1 H coil when the current in it is changing
- If the distance between the plates of two capacitor is increased then capacitance
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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