Home
Class 12
PHYSICS
Find the intensity of the wave for energ...

Find the intensity of the wave for energy density 1.1x10^-8 Jm^-3

Text Solution

Verified by Experts

Solution:
The intensity is
` I= (1/2(varepsilon_0)(E_(0)^2) c) = (1.1 xx (10^-8)J (m^-3)) xx (3 xx (10 ^8)m (s^-1))`
` = 3.3 W (m^-2).`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC WAVES

    HC VERMA|Exercise Worked Out Examples|5 Videos
  • ELECTROMAGNETIC WAVES

    HC VERMA|Exercise Question for short answers|7 Videos
  • ELECTROMAGNETIC INDUCTION

    HC VERMA|Exercise EXERCISE|98 Videos
  • GAUSS LAW

    HC VERMA|Exercise Exercises|24 Videos

Similar Questions

Explore conceptually related problems

In a sonometer experiment, the density of the material of the wire used is 7.5xx10^(3)kgm^(-3) . If the stress of the wire is 3.0xx10^(8)Nm^(-2) , find out the speed of the transverse wave in the wire.

In a plane electromagnetic wave, the electric field of amplitude 1 V m^(-1) varies with time in free space. The average energy density of magnetic field is (in Jm^(-2) )

The magnetic field in a plane electromagnetic wave is given by B= (200 (mu)T) sin [(4.0 x (10^15)(s^-1)(t-(x/c))] . Find the maximum electric field and the average energy density corresponding to the electric field .

In a plane electromagnetic wave, the electric field oscillates sin usoidally at a frequency of 2.0xx10^(10) Hz and amplitude 48 V m^(-1) . a. What is the wavelength of the wave ? b. What is the amplitude of the oscillating magnetic field ? c. Show that the average energy density of the E field equals the average energy density of the B field. [c=3xx10^(8)ms^(-1)] .

For aluminium the bulk modulus and modulus of rigidity are 7.5xx10^(10)Nm^(-2)and2.1xx10^(10)Nm^(-2) . Find the velocity of longitudinal waves in the medium. Density of aluminium is 2.7xx10^(3)kgm^(-3) .

A transverse wave described by y=(0.02m)sin[(1.0m^-1)x+(30s^-1)t] propagates on a stretched string having a linear mass density of 1.2xx10^-4 kgm^-1 . Find the tension in the string.

Find the intensity at a point on a screen in Young's double slit experiment where the interfering waves of equal intensity have a path difference of lamda/3

The intensity of sound from a point source is 1.0 xx 10^-8 Wm^-2 , at a distance of 5.0 m from the source. What will be the intensity at a distance of 25 m from the source ?