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The value of stopping potential in the following diagram is given by:
| 1. | \(-4\) V | 2. | \(-3\) V |
| 3. | \(-2\) V | 4. | \(-1\) V |
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| 1. | Curves \(a\) and \(b\) represent incident radiations of different frequencies and different intensities. |
| 2. | Curves \(a\) and \(b\) represent incident radiation of the same frequency but of different intensities. |
| 3. | Curves \(b\) and \(c\) represent incident radiation of different frequencies and different intensities. |
| 4. | Curves \(b\) and \(c\) represent incident radiations of the same frequency having the same intensity. |
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| 1. | \(N\) and \(2T\) | 2. | \(2N\) and \(T\) |
| 3. | \(2N\) and \(2T\) | 4. | \(N\) and \(T\) |
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The number of photo-electrons emitted per second from a metal surface increases when:
| 1. | The energy of incident photons increases. | 2. | The frequency of incident light increases. |
| 3. | The wavelength of the incident light increases. | 4. | The intensity of the incident light increases. |
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The stopping potential as a function of the frequency of the incident radiation is plotted for two different photoelectric surfaces \(A\) and \(B\). The graphs demonstrate that \(A\)'s work function is:
| 1. | Greater than that of \(B\). | 2. | Smaller than that of \(B\). |
| 3. | Equal to that of \(B\). | 4. | No inference can be drawn about their work functions from the given graphs. |
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4. |  |
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4. |  |
To unlock all the explanations of this course, you need to be enrolled.
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The figure shows different graphs between stopping potential \(V_0\) and frequency (\(\nu\)) for the photosensitive surfaces of cesium, potassium, sodium and lithium. The plots are parallel.
| 1. | Cesium |
| 2. | Potassium |
| 3. | Sodium |
| 4. | Lithium |
| 1. | (i) > (ii) > (iii) > (iv) | 2. | (i) > (iii) > (ii) > (iv) |
| 3. | (iv) > (iii) > (ii) > (i) | 4. | (i) = (iii) > (ii) = (iv) |
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