Electromagnetic waves, Physics

Find amplitude of electric field ina parallel beam of light of intensity 2W/m2


Given that intensity I=power/area=2W/M2

by using this formula :intensity I=(Emax^2/2c mue not)

from that Emax=magnitude of electric field

c=velocity of light=3*10^8m/sec

mue not =4pi*10^-7

Emax=38.82 N/m


Posted Date: 3/9/2013 6:10:53 AM | Location : United States

Related Discussions:- Electromagnetic waves, Assignment Help, Ask Question on Electromagnetic waves, Get Answer, Expert's Help, Electromagnetic waves Discussions

Write discussion on Electromagnetic waves
Your posts are moderated
Related Questions
Faraday's second law of electrolysis: The charge Q needed to deposit or liberate a mass m is proportional to the charge z of the mass, the ion and inversely proportional to th

You have answered a question · 7 mins ago ''The force of friction is required to move an object in space as there is no forece of attraction than how a satlite in space move around

People believe that seatbelts are a MUST. But they think that they could increase the risk of other road users. Explain why it would be difficult to gather evidence for this idea..

NEWTON'S FIRST LAW OF MOTION: This law states that "A body at rest will remain at rest and a body moving with uniform velocity will carry on doing so, until acted on by some un

Passing Lane velocity vs time graph Suppose the two cars below. The blue car begins ahead of" the red car. The red car actually begins off the screen.) Because the red car is

Energy gap: 2.4ev.   The colour of pure cadmium sulphide is pale yellow. It melts only under at high temperature. It can be prepared in the resistivity range from 10 to

For the magnetic circuit shown in Figure find the current I in the coil needed to produce a flux of 0.45mWb in the air gap. The silicon iron magnetic circuit has a uniform cros

The variable resistor is a resistor whose value can be accustomed by turn a shaft or sliding a control. They are also referred to as potentiometers or rheostats and permit the resi

A 50 kilogram ice skater glides across the ice in a straight line at 7 meters per second.  If she bends down and scoops up a 20 kilogram child standing on the ice, what will b