NEET Physics Semiconductor Electronics Questions Solved

Meeta's father was driving her to the school. At the traffic signal she noticed

that each traffic light was made of many tiny lights instead of a singal bulb.

When Meeta asked this question to her father, he explained the reason for this.

Answer the following question based on the above information:         (4 marks)

(i) What were the values displayed by Meeta and her father?

(ii) What answer did Meeta's father give?

(iii) What are the tiny lights in traffic signals called and how do these operate?


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