- 1(current)
Q. No.| 1. | \(13.6~\text{eV}+2.2~\text{eV}\) |
| 2. | \((10.2+2.2)~\text{eV}\) |
| 3. | \((3.4+2.2)~\text{eV}\) |
| 4. | \((1.89+2.2)~\text{eV}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | \(\lambda = \lambda_0\) |
| 2. | \(\lambda < \lambda_0\) |
| 3. | \(\lambda > \lambda_0\) |
| 4. | data is not sufficient to reach a conclusion |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(Take \(h=6.6\times 10^{-34}\ \) J-s)
1. \(B\) only
2. \(A\) only
3. neither \(A\) nor \(B\)
4. both \(A\) and \(B\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. \(2\) V
2. \(3.2\) V
3. \(4.2\) V
4. \(5.2\) V
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | be tripled | 2. | be more than tripled |
| 3. | be less than tripled | 4. | become one-third |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(\(e\) is electronic charge, \(h\) is Planck's constant, \(c\) is the velocity of light in vacuum)
| 1. | \(\dfrac{\lambda{P}}{h c} f\) | 2. | \(\dfrac{2\lambda{P}}{h c} f\) |
| 3. | \(\dfrac{\lambda{P}}{h c} f e\) | 4. | \(\dfrac{2\lambda{P}}{h c} f e\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the case of the photoelectric effect:
| 1. | Since photons are absorbed as single (discrete) units, there is no significant time delay in the emission of photoelectrons. |
| 2. | According to Einstein, the critical frequency \(\nu_{0} =\dfrac{e\phi }{h},\) where \(\phi\) is the work function and \(h\) is Planck’s constant. When light with this frequency \((\nu_0)\) hits the material, it causes electrons to be ejected with the maximum possible kinetic energy. |
| 3. | Only a small fraction of the incident photons succeed in ejecting photoelectrons, while the majority are absorbed by the system as a whole and generate thermal energy. |
| 4. | The maximum kinetic energy of the electrons depends on the intensity of the radiation. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe figure shows the stopping potential \(V_0\) (in volts), as a function of frequency \(\nu,\) for a sodium emitter. From the data plotted in the graph, what is the work function of sodium?
(Given: Planck’s constant, \(h=\) \(6.63\times 10^{-34}~\text{J-s}\) and the charge of an electron, \(e=1.6\times 10^{-19}~\text{C}\))
| 1. | \(1.95~\text{eV}\) | 2. | \(2.12~\text{eV}\) |
| 3. | \(1.82~\text{eV}\) | 4. | \(1.66~\text{eV}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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