1. Write any three applications of electromagnetic waves. Complete the given ray diagram [ See the attached picture ]

2. The power of a bulb of car is 100 W. If 5A current flows through the filament of the bulb , calculate the voltage of the battery used in the car [ Ans : 20 V ] Please show your workings!

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1.Electromagnetic waves have a vast range of practical everyday applications that includes such diverse uses as communication by cell phone and radio broadcasting, WiFi, cooking, vision, medical imaging, and treating cancer.

2.The resistance of a 50 W bulb is greater than the resistance than a 100 W bulb. The filament in the 50 W bulb is thicker and it will be brighter than the 100 W bulb. Increasing the power increases the resistances.

what is the question because that is not a question.