1.moving with a constant velocity
2.moving in a circular orbit
3.falling in an electric field
4.both (2) and (3)
If a variable frequency ac source is connected to a capacitor then with decrease in frequency the displacement current will
4.first decrease then increase
3.either ac or dc
4.neither dc nor ac
1. television waves
2. cellular phone communication
3. commercial FM radio
4.both (1) and (2)
2. infrared waves
1.Both magnetic and electric fields
2.Electric field only
3.Magnetic field only
4.None of these
1.Both electric and magnetic field vectors attain the maxima and minima at the same place and same time.
2.The energy in electromagnetic waves is divided equally between electric and magnetic field vectors.
3.Both electric and magnetic field vectors are parallel to each other and perpendicular to the direction of propagation of wave.
4.These waves do not require any material medium for propagation.