Email

Chat with tutors

Login

Ask Questions, Get Answers

X

Questions >> JEEMAIN and NEET >> Physics >> Class12 >> Electromagnetic Waves

A plane electromagnetic wave of frequency $25\: MHz$ travels in free space along the $x$ - direction. At a particular point in space and time, $E= 6.3 \: jV/m$ . What is B at this point?

asked Feb 27, 2014 by thanvigandhi_1

1 answer

The intensity of the sunlight reaching the earth is $1380\; W/m^2$ . Calculate the amplitude of the magnetic field in the light wave. Assume the light to be a plane monochromatic wave.

asked Feb 27, 2014 by thanvigandhi_1

1 answer

The wavelength of a radio wave of frequency of $1\: MHz$ is:

asked Feb 27, 2014 by thanvigandhi_1

1 answer

Which of the following are not electromagnetic waves?

asked Feb 27, 2014 by thanvigandhi_1

1 answer

Some radio waves of frequency of about $1.5 \times 10^9\: Hz$ was received by a radio-telescope from distant star. If the speed of the waves is $3 \times 10^5\: km/s$ , then the wave- length of the wave will be:

asked Feb 27, 2014 by thanvigandhi_1

1 answer

Electromagnetic waves are transverse in nature is evident by

asked Feb 27, 2014 by thanvigandhi_1

2 answers

Infrared radiation is detected by

asked Feb 26, 2014 by thanvigandhi_1

1 answer

The electromagnetic waves that stimulate blood circulation are

asked Feb 26, 2014 by thanvigandhi_1

1 answer

The oscillating electric & magnetic vectors of an electromagnetic wave are oriented along

asked Feb 26, 2014 by thanvigandhi_1

1 answer

Electromagnetic waves are produced by:

asked Feb 26, 2014 by thanvigandhi_1

1 answer

The pressure exerted by an electromagnetic wave of intensity $I$ on a non-reflecting surface is ( $c$ is velocity of light)

asked Feb 26, 2014 by thanvigandhi_1

1 answer

The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is $B_o = 510\: nT$ . What is the amplitude o the electric field part of the wave?

asked Feb 26, 2014 by thanvigandhi_1

1 answer

If $V_x , V_m\: and\: V_r$ respectively are the speed of X-rays, microwaves and radio waves in air, then

asked Feb 25, 2014 by thanvigandhi_1

1 answer

In an electromagnetic wave travelling in air, the amplitude $E_o$ and $B_o$ of the electric and magnetic fields are related as (here $c$ is the speed of the wave in air)

asked Feb 25, 2014 by thanvigandhi_1

1 answer

The speed of electromagnetic waves in vacuum is given by

asked Feb 25, 2014 by thanvigandhi_1

1 answer

A laser beam is used for carrying out surgery because it

asked Feb 25, 2014 by thanvigandhi_1

1 answer

Laser beams are used to measure long distances because:

asked Feb 25, 2014 by thanvigandhi_1

1 answer

A laser is a coherent source because it contains:

asked Feb 25, 2014 by thanvigandhi_1

1 answer

Page:

Feedback Terms Facebook Twitter About Us

Your payment for is successful.

...