Given below are two statements:
Statement I: Photovoltaic devices can convert optical radiation into electricity.
Statement II: Zener diode is designed to operate under reverse bias in breakdown region.
In the light of the above statements, choose the most appropriate answer from the options given below:
Statement I: Photovoltaic devices can convert optical radiation into electricity.
Statement II: Zener diode is designed to operate under reverse bias in breakdown region.
In the light of the above statements, choose the most appropriate answer from the options given below:
Statement I is incorrect but Statement II is correct.
Statement I and Statement II are incorrect.
Both Statement I and Statement II are correct.
Statement I is correct but Statement II is incorrect
The Correct Option is C
Solution and Explanation
In the given problem, we have two statements to evaluate:
- Statement I: Photovoltaic devices can convert optical radiation into electricity.
- Statement II: Zener diode is designed to operate under reverse bias in breakdown region.
We need to determine the correctness of these statements:
Analysis:
Statement I: This statement is correct. Photovoltaic devices, commonly known as solar cells, are designed to convert light energy, specifically optical radiation, directly into electrical energy. This process is based on the photovoltaic effect, where light photons are absorbed by the semiconductor material, exciting electrons and generating an electric current.
Statement II: This statement is also correct. A Zener diode is a special type of semiconductor diode which is designed to allow current to flow in the reverse direction when a specific breakdown voltage is reached. This voltage is known as the Zener voltage. Unlike regular diodes, Zener diodes operate efficiently in the breakdown region, which allows them to be used in voltage regulation applications.
Conclusion:
The most appropriate answer is: Both Statement I and Statement II are correct.
Top Questions on Semiconductor electronics: materials, devices and simple circuits
- Below given are some statements about electronic devices:
(A) Diodes can be used for rectifying an ac voltage.
(B) For semiconductors, band gap energy E\(_g\) > 3 eV.
(C) By changing the external applied voltage, junction barriers can be changed.
(D) p-n junction is the 'key' to all semiconductor devices.
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Questions Asked in NEET exam
- A container has two chambers of volumes \(V_1 = 2\) litres and \(V_2 = 3\) litres separated by a partition made of a thermal insulator. The chambers contain \(n_1 = 2\) moles and \(n_2 = 3\) moles of ideal gas at pressures \(p_1 = 1\) atm and \(p_2 = 2\) atm, respectively. When the partition is removed, the mixture attains an equilibrium pressure of :
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A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
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- Moment Of Inertia
The current passing through the battery in the given circuit, is:
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A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :
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- Two cities X and Y are connected by a regular bus service with a bus leaving in either direction every T min. A girl is driving scooty with a speed of 60 km/h in the direction X to Y. She notices that a bus goes past her every 30 minutes in the direction of her motion, and every 10 minutes in the opposite direction. Choose the correct option for the period T of the bus service and the speed (assumed constant) of the buses.
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Concepts Used:
Semiconductors
Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.
Properties of Semiconductor:
- Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
- Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
- Lesser power losses.
Uses of Semiconductor:
- Semiconductors are widely used in manufacturing electronics devices like transistors, diodes, sensors, integrated circuits.
- Semiconductors are widely used in all electronic devices, like mobile phones, digital cameras, communication devices, trains, ATMs, etc.