Q. Consider the following statements: A. The junction area of solar cell is made very narrow compared to a photo diode. B. Solar cells are not connected with any external bias. C. LED is made of lightly doped p-n junction. D. Increase of forward current results in continuous increase of LED light intensity. E. LEDs have to be connected in forward bias for emission of light. Choose the correct answer from the options given below:
A) B, E Only
B) B, D, E Only
C) A, C Only
D) A, C, E Only
Explanation
[Solution by Dr. Abubacker] A is false (a solar cell has a large junction area). B is true. C is false (an LED is heavily doped). D is false (the intensity saturates). E is true. So B and E only. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.