1.

Aayush sets up an experiment using liquid A in the beaker as shown in the figure. He observed that the bulb glows. Then, he replaced the liquid A by another liquid B. This time, the bulb did not glow. Nikhil suggested replacing the bulb by an LED. They observed that the LED lightened up. Explain the reason behind this.​

Answer»

LED stands for light emitting diode.The SECOND LIQUID will be PURE water but not 100% pure DUE to which NORMAL light did not glow but led glow.



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