A. In LED electrical energy is converted to light energy.
B. In Photodiode light energy is converted to electrical energy.
C. In Solar cell electrical energy is converted to light energy.
D. In Tunnel diode depletion layer is narrower than conventional p-n junction.
Choose the correct answer from the options given below :
Analyzing Semiconductor Device Statements
Evaluate each statement regarding semiconductor devices to determine their correctness:
-
Statement A: In LED electrical energy is converted to light energy.
This statement is correct. Light Emitting Diodes (LEDs) function based on the principle of electroluminescence, where electrical energy is directly converted into light energy when current flows through the semiconductor material.
-
Statement B: In Photodiode light energy is converted to electrical energy.
This statement is correct. Photodiodes operate on the principle of the photovoltaic effect. They convert incident light energy (photons) into electrical energy (current or voltage).
-
Statement C: In Solar cell electrical energy is converted to light energy.
This statement is incorrect. Solar cells, like photodiodes, convert light energy into electrical energy. The conversion of electrical energy to light energy is characteristic of devices like LEDs.
-
Statement D: In Tunnel diode depletion layer is narrower than conventional p-n junction.
This statement is correct. Tunnel diodes are heavily doped p-n junction diodes. This heavy doping results in a significantly thinner (narrower) depletion layer compared to standard p-n junction diodes.
Identifying Correct Statements
Based on the analysis above, the correct statements are A, B, and D.
Selecting the Correct Option
The option that includes only the correct statements (A, B, and D) is Option 4.
Similar Questions
- Find the lattice parameter '$a$' for a simple cubic crystal refracting an X Ray ($\lambda = 1.54$ $\text{\AA}$) at an angle $45^\circ$ from a plane having miller indices (1, 1, 0) at order (n= 1).
- The expression $C_V = 3R$ represents :
- A steel wire of length $2.5\text{ m}$ and area of cross-section $2.5 \times 10^{-6}\text{ m}^2$ is suspended from torsion head. A $5\text{ kg}$ weight is suspended at its face end, find the change in length of wire ($\Delta L$). (Given $Y=2\times 10^{11}\text{ N/m}^2$)
- Which of the following relation gives the potential energy of a diatomic molecule ?
- The packing fraction of face centered cubic (fcc) lattice is :
- The electrical conductivity of a metal $\sigma$ is give by :
- The direct lattices are given by $a_1 = (\hat{j} + \hat{k})$, $a_2 = (3\hat{i} - 2\hat{k})$ and $a_3 = (4\hat{i} + 3\hat{j})$, find out the reciprocal lattices $b_1$, $b_2$ and $b_3$.
- The shortest wavelength present in the X-rays at an accelerating potential of 50 KV is :
- Among the following which one term does not represent Gibbs free energy ?
- For an ideal hcp structure, where the atomic spheres touch each other, the ration of $\frac{c}{a}$ is :
Important Questions from Mixed Topic (CUET PG)
- Kalpsutra, the illustrated canonical text is from:-
- The Harappan city almost exclusively devoted to craft production was-:
- Mohandas Karamchand Gandhi launched quit India movement after the failure of:-
- The "Objectives Resolution" was introduced in constituent assembly by:-
- Who among the following was not a member of the constituent assembly:-
