Day 167: JEE Mains Physics

1. A.
   increases with increase in the wavelength of the incident light
2. B.
   increases with increase in the intensity of the incident light
3. C.
   is $\left( \frac{1}{e} \right)$ times the maximum kinetic energy of the emitted photoelectrons
4. D.
   decreases with increase in the intensity of the incident light

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1. A.
   $0.2{\text{ }m}^{2}$
2. B.
   $0.02{\text{ }m}^{2}$
3. C.
   $20{\text{ }m}^{2}$
4. D.
   $0.1{\text{ }m}^{2}$

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1. A.
   2
2. B.
   3
3. C.
   5
4. D.
   4

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1. A.
   $\frac{(1 + \sqrt{3})}{r}$
2. B.
   $\frac{r}{3(1 + \sqrt{3})}$
3. C.
   $\frac{r}{(1 + \sqrt{3})}$
4. D.
   $r(1 + \sqrt{3})$

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1. A.
   $6\text{ }km$
2. B.
   $\sqrt{8}\text{ }km$
3. C.
   $4\text{ }km$
4. D.
   $8\text{ }km$

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