- 1(current)
Q. No.(Take charge of an electron as \(1.6\times10^{-19}~\text{C})\)
1. \(0.59~(\Omega\text-\text{m})^{-1}\)
2. \(1.20~(\Omega\text-\text{m})^{-1}\)
3. \(1.68~(\Omega\text-\text{m})^{-1}\)
4. \(1.83~(\Omega\text-\text{m})^{-1}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn LED is constructed from \(\mathrm{Ga\text-As\text-P}\) semiconducting material with an energy gap of \(1.9~\text{eV}.\) What is the wavelength of the emitted light and what colour does it correspond to?
(take \(h=6.63\times10^{-34}~\text{J-s}\) and \(c=3\times10^8~\text{m/s}\))
| 1. | \(1046~\text{nm}\) and red colour |
| 2. | \(654~\text{nm}\) and orange colour |
| 3. | \(1046~\text{nm}\) and blue colour |
| 4. | \(654~\text{nm}\) and red colour |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. \(3~\text{eV}\)
2. \(5~\text{eV}\)
3. \(1~\text{eV}\)
4. \(7~\text{eV}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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