Photo Cell
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Dual nature of radiation and Matter

142345 When an inert gas is filled in the place of vacuum in a photocell, then

1 photoelectric current is decreased
2 photoelectric current is increased
3 photoelectric current remains the same
4 decrease or increase in photoelectric current does not depend upon the gas filled
CG PET- 2004
Dual nature of radiation and Matter

142355 The cathode of a photoelectric cell is changed such that the work function changes from $W_{1}$ to $W_{2}\left(W_{2}>W_{1}\right)$. If the current before and after changes are $I_{1}$ and $I_{2}$, all other conditions remaining unchanged, then (assuming $h v>W_{2}$ )

1 $\mathrm{I}_{1}=\mathrm{I}_{2}$
2 I $_{1} \lt $ I $_{2}$
3 $\mathrm{I}_{1}>\mathrm{I}_{2}$
4 I $_{1} \lt $ I $_{2} \lt 2$ I $_{1}$
AIPMT - 1992
Dual nature of radiation and Matter

142356 A photocell employs photoelectric effect to convert

1 change in the frequency of light into a change in electric voltage
2 change in the intensity of illumination into a change in photoelectric current
3 change in the intensity of illumination into a change in the work function of the photocathode
4 change in the frequency of light into a change in the electric current
AIPMT-2006
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Dual nature of radiation and Matter

142345 When an inert gas is filled in the place of vacuum in a photocell, then

1 photoelectric current is decreased
2 photoelectric current is increased
3 photoelectric current remains the same
4 decrease or increase in photoelectric current does not depend upon the gas filled
CG PET- 2004
Dual nature of radiation and Matter

142355 The cathode of a photoelectric cell is changed such that the work function changes from $W_{1}$ to $W_{2}\left(W_{2}>W_{1}\right)$. If the current before and after changes are $I_{1}$ and $I_{2}$, all other conditions remaining unchanged, then (assuming $h v>W_{2}$ )

1 $\mathrm{I}_{1}=\mathrm{I}_{2}$
2 I $_{1} \lt $ I $_{2}$
3 $\mathrm{I}_{1}>\mathrm{I}_{2}$
4 I $_{1} \lt $ I $_{2} \lt 2$ I $_{1}$
AIPMT - 1992
Dual nature of radiation and Matter

142356 A photocell employs photoelectric effect to convert

1 change in the frequency of light into a change in electric voltage
2 change in the intensity of illumination into a change in photoelectric current
3 change in the intensity of illumination into a change in the work function of the photocathode
4 change in the frequency of light into a change in the electric current
AIPMT-2006
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Dual nature of radiation and Matter

142345 When an inert gas is filled in the place of vacuum in a photocell, then

1 photoelectric current is decreased
2 photoelectric current is increased
3 photoelectric current remains the same
4 decrease or increase in photoelectric current does not depend upon the gas filled
CG PET- 2004
Dual nature of radiation and Matter

142355 The cathode of a photoelectric cell is changed such that the work function changes from $W_{1}$ to $W_{2}\left(W_{2}>W_{1}\right)$. If the current before and after changes are $I_{1}$ and $I_{2}$, all other conditions remaining unchanged, then (assuming $h v>W_{2}$ )

1 $\mathrm{I}_{1}=\mathrm{I}_{2}$
2 I $_{1} \lt $ I $_{2}$
3 $\mathrm{I}_{1}>\mathrm{I}_{2}$
4 I $_{1} \lt $ I $_{2} \lt 2$ I $_{1}$
AIPMT - 1992
Dual nature of radiation and Matter

142356 A photocell employs photoelectric effect to convert

1 change in the frequency of light into a change in electric voltage
2 change in the intensity of illumination into a change in photoelectric current
3 change in the intensity of illumination into a change in the work function of the photocathode
4 change in the frequency of light into a change in the electric current
AIPMT-2006
For More Updates join with Us