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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
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An object of mass 3kg is at rest. Now a force F=6t² i⃗+4t j⃗ is applied on the object
- The wavelength of X-rays is in the range
- A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel.The lift starts moving upwards wi
- A speeding motorcyclist sees traffic jam ahead him. He slows down to 36 km per hour
- In an interference experiment, third bright fringe is obtained at a point
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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