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1.
A large parallel plate capacitor, whose plates have an area of 
and are separated from each other by 1 mm, is being charged at a rate of 
. If the dielectric between the plates has the dielectric constant 10, then the displacement current at this instant is
and are separated from each other by 1 mm, is being charged at a rate of . If the dielectric between the plates has the dielectric constant 10, then the displacement current at this instant is
2.
The phase velocity 
of travelling wave is
of travelling wave is
3.
A cube of edge a has its edges parallel to 
and 
-axis of rectangular coordinate system. A uniform electric field 
is parallel to 
-axis and a uniform magnetic field is parallel to 
-axis. The rate at which flows through each face of the cube is
and -axis of rectangular coordinate system. A uniform electric field is parallel to -axis and a uniform magnetic field is parallel to -axis. The rate at which flows through each face of the cube is
4.
Television signals reach us only through the ground waves. The range 
related with the transmitter height 
is in proportion to
related with the transmitter height is in proportion to
5.
The electric field for a plane electromagnetic wave travelling in the positive 
-direction is represented by which one of the following?
-direction is represented by which one of the following?
6.
Radiations of intensity 0.5 Wm⻲ are striking a metal plate. The pressure on the plate is
7.
The electric field (in 
) in an electromagnetic wave is given by 
.
The energy stored in a cylinder of cross-section 10 cm² and length 100 cm, along the x-axis will be
) in an electromagnetic wave is given by .The energy stored in a cylinder of cross-section 10 cm² and length 100 cm, along the x-axis will be
8.
A radiowave has a maximum magnetic field induction of 
T on arrival at a receiving antenna. The maximum electric field intensity of such a wave is
T on arrival at a receiving antenna. The maximum electric field intensity of such a wave is
9.
The oscillating electric and magnetic field vectors of electromagnetic wave are oriented along
10.
The energy of X-ray photon is 
J. Its frequency is
J. Its frequency is