1. | 2. | ||
3. | 4. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | \(N\) and \(2T\) | 2. | \(2N\) and \(T\) |
3. | \(2N\) and \(2T\) | 4. | \(N\) and \(T\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | The stopping potential will decrease. |
2. | The stopping potential will increase. |
3. | The kinetic energy of emitted electrons will decrease. |
4. | The value of the work function will decrease. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe stopping potential for photoelectrons:
1. | does not depend on the frequency of the incident light. |
2. | does not depend upon the nature of the cathode material. |
3. | depends on both the frequency of the incident light and the nature of the cathode material. |
4. | depends upon the intensity of the incident light. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | \(1.4\) eV | 2. | \(1.7\) eV |
3. | \(5.4\) eV | 4. | \(6.8\) eV |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor photoelectric emission from certain metals, the cutoff frequency is \(\nu\). If radiation of frequency \(2\nu\) impinges on the metal plate, the maximum possible velocity of the emitted electron will be:
(\(m\) is the electron mass)
1. | \(\sqrt{\dfrac{h\nu}{m}}\) | 2. | \(\sqrt{\dfrac{2h\nu}{m}}\) |
3. | \(2\sqrt{\dfrac{h\nu}{m}}\) | 4. | \(\sqrt{\dfrac{h\nu}{2m}}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | \(1\) V | 2. | \(2.1\) V |
3. | \(3.1\) V | 4. | Zero |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology