1. | \(4.4~\text{eV}\) | 2. | \(7.103\times10^{-15}~\text{J}\) |
3. | \(1.9~\text{eV}\) | 4. | \(4.60~\text{eV}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | \({e}+2\phi \) | 2. | \(2{e}-\phi \) |
3. | \({e}-\phi \) | 4. | \({e}+\phi \) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | \(\dfrac{3}{2} \nu\) | 2. | \(2\nu\) |
3. | \(3\nu\) | 4. | \(\dfrac{2}{3} \nu\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | \(2~\text{eV}\) | 2. | \(2~\text{V}\) |
3. | \(1.1~\text{V}\) | 4. | \(6.4~\text{V}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | \(h\nu_0\) | 2. | \(2h\nu_0\) |
3. | \(3h\nu_0\) | 4. | \(4h\nu_0\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen the light of frequency \(2\nu_0\) (where \(\nu_0\) is threshold frequency), is incident on a metal plate, the maximum velocity of electrons emitted is \(v_1\). When the frequency of the incident radiation is increased to \(5\nu_0,\) the maximum velocity of electrons emitted from the same plate is \(v_2.\) What will be the ratio of \(v_1\) to \(v_2\)?
1. | \(1:2\) | 2. | \(1:4\) |
3. | \(4:1\) | 4. | \(2:1\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe photoelectric threshold wavelength of silver is \(3250\times 10^{-10}~\text{m}\). What will be the velocity of the electron ejected from a silver surface by the ultraviolet light of wavelength \(2536\times 10^{-10}~\text{m}\)? (Given \(h= 4.14\times 10^{-15}~\text{eVs}\) and \(c= 3\times 10^{8}~\text{m/s}\))
1. \(\approx 0.6\times 10^{6}~\text{m/s}\)
2. \(\approx 61\times 10^{3}~\text{m/s}\)
3. \(\approx 0.3\times 10^{6}~\text{m/s}\)
4. \(\approx 0.3\times 10^{5}~\text{m/s}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPhotons with energy \(5~\text{eV}\) are incident on a cathode \(C\) in a photoelectric cell. The maximum energy of emitted photoelectrons is \(2~\text{eV}\). When photons of energy \(6~\text{eV}\) are incident on \(C\), no photoelectrons will reach the anode \(A\), if the stopping potential of \(A\) relative to \(C\) is:
1. \(+3~\text{V}\)
2. \(+4~\text{V}\)
3. \(-1~\text{V}\)
4. \(-3~\text{V}\)
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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 & BiologyA photoelectric surface is illuminated successively by the monochromatic light of wavelength \(\lambda\) and \(\frac{\lambda}{2}\). If the maximum kinetic energy of the emitted photoelectrons in the second case is \(3\) times that in the first case, the work function of the surface of the mineral is:
[\(h\) = Plank’s constant, \(c\) = speed of light]
1. \(\frac{hc}{2\lambda}\)
2. \(\frac{hc}{\lambda}\)
3. \(\frac{2hc}{\lambda}\)
4. \(\frac{hc}{3\lambda}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology