QBManager

Dual nature of radiation and Matter

142349 If the distance of $100 W$ lamp is increased from a photocell, the saturation current $i$ in the photocell varies with the distance $d$ as

1 i

\propto d^{2}

2

i \propto d

3

i \propto \frac{1}{d}

4

i \propto \frac{1}{d^{2}}

Explanation:

D We know that,
Intensity $(I) = P / A$
$I \propto \frac{1}{d^{2}} \Rightarrow I \propto (\frac{n}{t})$
Where, $n =$ number of photon emitted at the surface.

VITEEE-2014

Dual nature of radiation and Matter

142352 The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon :

1 wavelength

2 frequency

3 intensity

4 work function

Explanation:

C From Einstein's equation of photoelectric effect
${KE}_{max} = h (v - v_{0})$
$∴$ The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon intensity of light.

Karnataka CET-2008

Dual nature of radiation and Matter

142336 The material that is not photo sensitive to visible light is

1 caesium

2 sodium

3 rubidium

4 cadmium

5 potassium

Kerala CEE 04.07.2022

Dual nature of radiation and Matter

142338 Out of following statements which one is correct?

1 The current in photocell increases with increasing frequency.

2 The stopping potential increases with increase in intensity of incident light.

3 The photocurrent is proportional to the applied voltage.

4 The photocurrent increases with intensity of incident light.

MHT-CET 2020

Dual nature of radiation and Matter

142340 Photoelectric cell is 'NOT' used in

1 exposure meter

2 burglar alarm

3 sound reproduction from motion pictures

4 brake indicators in vehicles

MHT-CET 2020

Dual nature of radiation and Matter

142349 If the distance of $100 W$ lamp is increased from a photocell, the saturation current $i$ in the photocell varies with the distance $d$ as

1 i

\propto d^{2}

2

i \propto d

3

i \propto \frac{1}{d}

4

i \propto \frac{1}{d^{2}}

Explanation:

D We know that,
Intensity $(I) = P / A$
$I \propto \frac{1}{d^{2}} \Rightarrow I \propto (\frac{n}{t})$
Where, $n =$ number of photon emitted at the surface.

VITEEE-2014

Dual nature of radiation and Matter

142352 The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon :

1 wavelength

2 frequency

3 intensity

4 work function

Explanation:

C From Einstein's equation of photoelectric effect
${KE}_{max} = h (v - v_{0})$
$∴$ The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon intensity of light.

Karnataka CET-2008

Dual nature of radiation and Matter

142336 The material that is not photo sensitive to visible light is

1 caesium

2 sodium

3 rubidium

4 cadmium

5 potassium

Kerala CEE 04.07.2022

Dual nature of radiation and Matter

142338 Out of following statements which one is correct?

1 The current in photocell increases with increasing frequency.

2 The stopping potential increases with increase in intensity of incident light.

3 The photocurrent is proportional to the applied voltage.

4 The photocurrent increases with intensity of incident light.

MHT-CET 2020

Dual nature of radiation and Matter

142340 Photoelectric cell is 'NOT' used in

1 exposure meter

2 burglar alarm

3 sound reproduction from motion pictures

4 brake indicators in vehicles

MHT-CET 2020

Dual nature of radiation and Matter

142349 If the distance of $100 W$ lamp is increased from a photocell, the saturation current $i$ in the photocell varies with the distance $d$ as

1 i

\propto d^{2}

2

i \propto d

3

i \propto \frac{1}{d}

4

i \propto \frac{1}{d^{2}}

Explanation:

D We know that,
Intensity $(I) = P / A$
$I \propto \frac{1}{d^{2}} \Rightarrow I \propto (\frac{n}{t})$
Where, $n =$ number of photon emitted at the surface.

VITEEE-2014

Dual nature of radiation and Matter

142352 The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon :

1 wavelength

2 frequency

3 intensity

4 work function

Explanation:

C From Einstein's equation of photoelectric effect
${KE}_{max} = h (v - v_{0})$
$∴$ The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon intensity of light.

Karnataka CET-2008

Dual nature of radiation and Matter

142336 The material that is not photo sensitive to visible light is

1 caesium

2 sodium

3 rubidium

4 cadmium

5 potassium

Kerala CEE 04.07.2022

Dual nature of radiation and Matter

142338 Out of following statements which one is correct?

1 The current in photocell increases with increasing frequency.

2 The stopping potential increases with increase in intensity of incident light.

3 The photocurrent is proportional to the applied voltage.

4 The photocurrent increases with intensity of incident light.

MHT-CET 2020

Dual nature of radiation and Matter

142340 Photoelectric cell is 'NOT' used in

1 exposure meter

2 burglar alarm

3 sound reproduction from motion pictures

4 brake indicators in vehicles

MHT-CET 2020

Dual nature of radiation and Matter

142349 If the distance of $100 W$ lamp is increased from a photocell, the saturation current $i$ in the photocell varies with the distance $d$ as

1 i

\propto d^{2}

2

i \propto d

3

i \propto \frac{1}{d}

4

i \propto \frac{1}{d^{2}}

Explanation:

D We know that,
Intensity $(I) = P / A$
$I \propto \frac{1}{d^{2}} \Rightarrow I \propto (\frac{n}{t})$
Where, $n =$ number of photon emitted at the surface.

VITEEE-2014

Dual nature of radiation and Matter

142352 The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon :

1 wavelength

2 frequency

3 intensity

4 work function

Explanation:

C From Einstein's equation of photoelectric effect
${KE}_{max} = h (v - v_{0})$
$∴$ The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon intensity of light.

Karnataka CET-2008

Dual nature of radiation and Matter

142336 The material that is not photo sensitive to visible light is

1 caesium

2 sodium

3 rubidium

4 cadmium

5 potassium

Kerala CEE 04.07.2022

Dual nature of radiation and Matter

142338 Out of following statements which one is correct?

1 The current in photocell increases with increasing frequency.

2 The stopping potential increases with increase in intensity of incident light.

3 The photocurrent is proportional to the applied voltage.

4 The photocurrent increases with intensity of incident light.

MHT-CET 2020

Dual nature of radiation and Matter

142340 Photoelectric cell is 'NOT' used in

1 exposure meter

2 burglar alarm

3 sound reproduction from motion pictures

4 brake indicators in vehicles

MHT-CET 2020

Dual nature of radiation and Matter

142349 If the distance of $100 W$ lamp is increased from a photocell, the saturation current $i$ in the photocell varies with the distance $d$ as

1 i

\propto d^{2}

2

i \propto d

3

i \propto \frac{1}{d}

4

i \propto \frac{1}{d^{2}}

Explanation:

D We know that,
Intensity $(I) = P / A$
$I \propto \frac{1}{d^{2}} \Rightarrow I \propto (\frac{n}{t})$
Where, $n =$ number of photon emitted at the surface.

VITEEE-2014

Dual nature of radiation and Matter

142352 The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon :

1 wavelength

2 frequency

3 intensity

4 work function

Explanation:

C From Einstein's equation of photoelectric effect
${KE}_{max} = h (v - v_{0})$
$∴$ The maximum kinetic energy of emitted electrons in a photoelectric effect does not depend upon intensity of light.

Karnataka CET-2008

Dual nature of radiation and Matter

142336 The material that is not photo sensitive to visible light is

1 caesium

2 sodium

3 rubidium

4 cadmium

5 potassium

Kerala CEE 04.07.2022

Dual nature of radiation and Matter

142338 Out of following statements which one is correct?

1 The current in photocell increases with increasing frequency.

2 The stopping potential increases with increase in intensity of incident light.

3 The photocurrent is proportional to the applied voltage.

4 The photocurrent increases with intensity of incident light.

MHT-CET 2020

Dual nature of radiation and Matter

142340 Photoelectric cell is 'NOT' used in

1 exposure meter

2 burglar alarm

3 sound reproduction from motion pictures

4 brake indicators in vehicles

MHT-CET 2020