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Q. No.Monochromatic light of frequency \(6.0\times 10^{14}~\text{Hz}\) is produced by a laser. The power emitted is \(2.0\times 10^{-3}~\text{W}\) How many photons per second, on average, are emitted by the source?
1. \(6\times 10^{15}\)
2. \(5\times 10^{14}\)
3. \(6\times 10^{14}\)
4. \(5\times 10^{15}\)
Subtopic: Â Particle Nature of Light |
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The work function of cesium is \(2.14\) eV. The threshold frequency for cesium is:
1. \(5.03\times10^{12}\) Hz
2. \(6.12\times10^{14}\) Hz
3. \(5.16\times10^{14}\) Hz
4. \(6.51\times10^{12}\) Hz
1. \(5.03\times10^{12}\) Hz
2. \(6.12\times10^{14}\) Hz
3. \(5.16\times10^{14}\) Hz
4. \(6.51\times10^{12}\) Hz
Subtopic: Â Particle Nature of Light |
 70%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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Q. No.
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