Objective Question Papers
Chapter 8: ELECTROMAGNETIC WAVES
Que 1:What is the phase difference between electric and magnetic fields in an electromagnetic wave?
Que 2:Which of the following waves have a maximum frequency?
Que 3:According to Maxwell’s Hypothesis, a changing electric field gives rise to?
Que 4:Which of the following proves that electromagnetic waves are transverse?
Que 5:Which of the following is used to investigate the structure of solids?
Que 6:Which of the following radiations are used to treat muscle ache?
Que 7:When is the conduction current the same as the displacement current?
Que 8:An electromagnetic wave can be produced when the charge is
Que 9:Which waves are used by artificial satellites for communication?
Que 10:The ratio of contributions made by the magnetic field and electric field components to the intensity of an EM wave is
Que 11:Maxwell in his famous equations of electromagnetism introduced the concept of
Que 12:The conduction current is same as displacement current when source is
Que 13:If a variable frequency ac source is connected to a capacitor then with decrease in frequency the displacement current will
Que 14:An electromagnetic wave can be produced, when charge is
Que 15:Which of the following statement is false for the properties of electromagnetic waves?
Que 16:Which of the following has/have zero average value in a plane electromagnetic wave?
Que 17:A charged particle oscillates about its mean equilibrium position with a frequency of 109 Hz. The frequency of electromagnetic waves produced by the oscillator is
Que 18:The ultra high frequency band of radio waves in electromagnetic wave is used as in
Que 19:The waves used by artificial satellites for communication is
Que 20:Which of the following electromagnetic waves is used in medicine to destroy cancer cells?
