A lamp radiates power P(0) uniformly in ...

A lamp radiates power `P_(0)` uniformly in all directions, the amplitude of electric field strength `E_(0)` at a distance `r` from it is

`(P)/(pi c epsilon_(0)r^(2))`

`(P)/(2pi c epsilonr^(2))`

`sqrt((P)/(pi epsilon_(0)r^(2)c))`

`sqrt((P)/(pi epsilon_(0)cr^(2)))`

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

NTA NEET SET 23
NTA MOCK TESTS|Exercise PHYSICS|45 Videos
NTA NEET SET 26
NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A lamp radiates power P_(0) uniformly in all directions, the amplitude of elctric field strength E_(0) at a distance r from it is

A point source of 2 watt is radiating uniformly in all direction in vacuum. Find the amplitude of electric field at a distance 2m from it-

A red LED emits light of 0.1 watt uniformaly around it. The amplitude of the electric field of the light at a distance of 1m from the diode is

A mercury lamp is radiating monochromatic light of power 10W.The peak value of electric field strength at a distance of 5m from the lamp is nearly

A 100 W sodium lamp is radiating light of wavelength 5890A , uniformly in all directions, a. At what rate, photons are emitted from the lamp? b. At what distance from the lamp, the average flux is 1 photon( cm^2-s)^-1? c. What are the photon flux and photon density at 2m from the lamp?

A time varying uniform magnetic field passes through a circular region of radius R. The magnetic field is directed outwards and it is a function of radial distance 'r' and time 't' according to relation B-B_(0)rt. The induced electric field strength at a radial distance R//2 from the centre will be.

A radio station on the surface of the earth radiates 50 kW . If transmitter radiates equally in all directions avove the surface of the earth . Find the amplitude of electric field detected 100 km away :

A thin half ring of radius R = 20 cm is uniformly charged with a total charge q = 0.70 nC .Find the magnitude of the electric field strength at the curvaite centre of this half-ring.

NTA MOCK TESTS-NTA NEET SET 24-PHYSICS

If the total energy of a simple harmonic oscillator is E, then its pot...
Text Solution
|
For simple Harmonic Oscillator, the potential energy is equal to kinet...
Text Solution
|
A lamp radiates power P(0) uniformly in all directions, the amplitude ...
Text Solution
|
A photon will have less energy if its
Text Solution
|
Assume that a drop of liquid evaporates by decreases in its surface en...
Text Solution
|
Flow rate of blood through a capillary of cross - sectional are of 0.2...
Text Solution
|
The focal length of lens of refractive index 1.5 in air is 30 cm When ...
Text Solution
|
An astronomical telescope has objective and eye-piece lens of powers 0...
Text Solution
|
A yo-yo is placed on a rough horizontal surface and a constant force F...
Text Solution
|
A thin circular ring of mass M and radius R is rotating about its a...
Text Solution
|
If the ratio of the concentration of electron to that of holes in a se...
Text Solution
|
An AND gate is following by a NOT gate in series. With two inputs A & ...
Text Solution
|
With forward biased mode, the p-n junction diode
Text Solution
|
If specific heat of a substance is infinite, it means
Text Solution
|
Which of the following physical quantities has neither units nor dimen...
Text Solution
|
The diffraction pattern of a single slit is shown in the figure. The p...
Text Solution
|
In Young's double slit experiment, how many maximas can be obtained on...
Text Solution
|
In Young's double experiment , in air interference pattern second ...
Text Solution
|
A string of density 7.5 gcm^(-3) and area of cross - section 0.2mm^(2)...
Text Solution
|
Each of the two strings of length 51.6 cm and 49.1 cm are tensioned se...
Text Solution
|