Semiconductor Electronics Material Devices and Simple Circuits
150992
Photocells are used for the
1 reproduction of films from the cinema films.
2 reproduction of sound from the cinema films.
3 automatic switching of street light.
4 both (b) and (c).
Explanation:
D Photocells are used for the automatic switching of street light \& reproduction of sound from the cinema films.
J and K CET- 2002
Semiconductor Electronics Material Devices and Simple Circuits
150998
A semiconductor device which is used for detecting light intensity is called a
1 solar cells
2 zener diode
3 LED
4 photodiode
Explanation:
D A photodiode is a semiconductor device as it converts light into current and is also used for detecting light intensity.
EAMCET-1992
Semiconductor Electronics Material Devices and Simple Circuits
150999
In which one of the following devices, the light energy is converted into the electrical energy?
1 Light-emitting diode
2 Laser diode
3 Solar cell
4 Transistor
Explanation:
C Solar cell is the device which converts light energy into the electrical energy. A solar cell is also known as a photovoltaic cell or PV cell which is made up of silicon which absorbs the photons emitted by sun's rays.
UPSC NDA-04.09.2022
Semiconductor Electronics Material Devices and Simple Circuits
151000
In a photodiode, the value of the emf produced by a monochromatic light beam is directly proportional to
1 The barrier potential at p-n junction
2 The intensity of light falling on the photodiode
3 The frequency of light falling on the photodiode
4 The voltage applied at the p-n junction.
Explanation:
B The intensity of the light is defined as the power of the light incident in the unit area. We know that the power is directly proportional to the current. And the current is proportional to the intensity of the light falling on the photodiode.
Semiconductor Electronics Material Devices and Simple Circuits
150992
Photocells are used for the
1 reproduction of films from the cinema films.
2 reproduction of sound from the cinema films.
3 automatic switching of street light.
4 both (b) and (c).
Explanation:
D Photocells are used for the automatic switching of street light \& reproduction of sound from the cinema films.
J and K CET- 2002
Semiconductor Electronics Material Devices and Simple Circuits
150998
A semiconductor device which is used for detecting light intensity is called a
1 solar cells
2 zener diode
3 LED
4 photodiode
Explanation:
D A photodiode is a semiconductor device as it converts light into current and is also used for detecting light intensity.
EAMCET-1992
Semiconductor Electronics Material Devices and Simple Circuits
150999
In which one of the following devices, the light energy is converted into the electrical energy?
1 Light-emitting diode
2 Laser diode
3 Solar cell
4 Transistor
Explanation:
C Solar cell is the device which converts light energy into the electrical energy. A solar cell is also known as a photovoltaic cell or PV cell which is made up of silicon which absorbs the photons emitted by sun's rays.
UPSC NDA-04.09.2022
Semiconductor Electronics Material Devices and Simple Circuits
151000
In a photodiode, the value of the emf produced by a monochromatic light beam is directly proportional to
1 The barrier potential at p-n junction
2 The intensity of light falling on the photodiode
3 The frequency of light falling on the photodiode
4 The voltage applied at the p-n junction.
Explanation:
B The intensity of the light is defined as the power of the light incident in the unit area. We know that the power is directly proportional to the current. And the current is proportional to the intensity of the light falling on the photodiode.
Semiconductor Electronics Material Devices and Simple Circuits
150992
Photocells are used for the
1 reproduction of films from the cinema films.
2 reproduction of sound from the cinema films.
3 automatic switching of street light.
4 both (b) and (c).
Explanation:
D Photocells are used for the automatic switching of street light \& reproduction of sound from the cinema films.
J and K CET- 2002
Semiconductor Electronics Material Devices and Simple Circuits
150998
A semiconductor device which is used for detecting light intensity is called a
1 solar cells
2 zener diode
3 LED
4 photodiode
Explanation:
D A photodiode is a semiconductor device as it converts light into current and is also used for detecting light intensity.
EAMCET-1992
Semiconductor Electronics Material Devices and Simple Circuits
150999
In which one of the following devices, the light energy is converted into the electrical energy?
1 Light-emitting diode
2 Laser diode
3 Solar cell
4 Transistor
Explanation:
C Solar cell is the device which converts light energy into the electrical energy. A solar cell is also known as a photovoltaic cell or PV cell which is made up of silicon which absorbs the photons emitted by sun's rays.
UPSC NDA-04.09.2022
Semiconductor Electronics Material Devices and Simple Circuits
151000
In a photodiode, the value of the emf produced by a monochromatic light beam is directly proportional to
1 The barrier potential at p-n junction
2 The intensity of light falling on the photodiode
3 The frequency of light falling on the photodiode
4 The voltage applied at the p-n junction.
Explanation:
B The intensity of the light is defined as the power of the light incident in the unit area. We know that the power is directly proportional to the current. And the current is proportional to the intensity of the light falling on the photodiode.
Semiconductor Electronics Material Devices and Simple Circuits
150992
Photocells are used for the
1 reproduction of films from the cinema films.
2 reproduction of sound from the cinema films.
3 automatic switching of street light.
4 both (b) and (c).
Explanation:
D Photocells are used for the automatic switching of street light \& reproduction of sound from the cinema films.
J and K CET- 2002
Semiconductor Electronics Material Devices and Simple Circuits
150998
A semiconductor device which is used for detecting light intensity is called a
1 solar cells
2 zener diode
3 LED
4 photodiode
Explanation:
D A photodiode is a semiconductor device as it converts light into current and is also used for detecting light intensity.
EAMCET-1992
Semiconductor Electronics Material Devices and Simple Circuits
150999
In which one of the following devices, the light energy is converted into the electrical energy?
1 Light-emitting diode
2 Laser diode
3 Solar cell
4 Transistor
Explanation:
C Solar cell is the device which converts light energy into the electrical energy. A solar cell is also known as a photovoltaic cell or PV cell which is made up of silicon which absorbs the photons emitted by sun's rays.
UPSC NDA-04.09.2022
Semiconductor Electronics Material Devices and Simple Circuits
151000
In a photodiode, the value of the emf produced by a monochromatic light beam is directly proportional to
1 The barrier potential at p-n junction
2 The intensity of light falling on the photodiode
3 The frequency of light falling on the photodiode
4 The voltage applied at the p-n junction.
Explanation:
B The intensity of the light is defined as the power of the light incident in the unit area. We know that the power is directly proportional to the current. And the current is proportional to the intensity of the light falling on the photodiode.
