- 1(current)
Q. No.The LED:
1. is reverse-biased.
2. is forward-biased.
3. can be made of \(\mathrm{GaAs}\).
4. both (2) & (3) are correct.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. oscillatory circuit
2. current amplification
3. voltage amplification
4. all of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| i. | in forward bias |
| ii. | in reverse bias |
| iii. | in parallel with the load |
| iv. | in series with the load |
| 1. | (i) and (ii) are correct |
| 2. | (ii) and (iii) are correct |
| 3. | only (i) is correct |
| 4. | only (iv) is correct |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| Assertion (A): | The resistance of a photodiode decreases when light having photons of sufficient energy is incident on it. |
| Reason (R): | When energetic photons fall on the \(\mathrm{p\text{-}n}\) junction of a photodiode, electron-hole pairs are created due to the breaking of the valence bonds. |
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
For the above circuit, the applied voltage \(V(t)\) is periodic and linear, and is shown by the waveform below:
The current flowing through \(R_2\) varies as:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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