Home
Class 12
PHYSICS
A radiation is emitted by 1000 W bulb an...

A radiation is emitted by 1000 W bulb and it generates an electric field and magnetic field at P, placed at a distance of 2 m. The efficiency of the bulb is 1.25%. The value of peak electric field at Pis `"x"xx10^(-1)V//m`. Value of x is_
(Rounded-off to the nearest integer)
[Take `epsi_0=8.85xx10^(-12)C^2N^(-1)m^(-2),c=3xx10^8ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
137
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • JEE MAIN 2021

    JEE MAINS PREVIOUS YEAR|Exercise PHYSICS (SECTION-A)|20 Videos

  • JEE MAIN 2021

    JEE MAINS PREVIOUS YEAR|Exercise PHYSICS (SECTION-B)|10 Videos

  • JEE MAIN 2021

    JEE MAINS PREVIOUS YEAR|Exercise SECTION-A|80 Videos

  • JEE MAIN

    JEE MAINS PREVIOUS YEAR|Exercise All Questions|473 Videos

  • JEE MAIN 2022

    JEE MAINS PREVIOUS YEAR|Exercise Question|492 Videos

Similar Questions

Explore conceptually related problems

An electromagnetic wave is radiated by a 100 W bulb. If efficiency of the bulb is 20% then the amplitude of magnetic field at a distance of 1 m is (consider bulb as a point source)

Calculate the electric and magnetic fields produced by the radiation coming from a 100 W bulb at a distance of 3 m . Assume that the efficiency of the bulb is 25% and it is a point source.

Knowledge Check

  • In an electromagnetic wave, the maximum value of the electric field is 100 Vm^(-1) The average intensity is [epsilon_90)=8.8xx10^(-12)c^(-2)N^(-1)m^(2)]

    A
    `"13.2 W m"^(-2)`
    B
    `"36.5 W m"^(-2)`
    C
    `"46.7 W m"^(-2)`
    D
    `"765 W m"^(-2)`

  • A charged particle with a velocity 2xx10^(3) ms^(-1) passes undeflected through electric field and magnetic fields in mutually perpendicular directions. The magnetic field is 1.5 t. the magnitude of electric field will be

    A
    `1.5xx10^(3) NC^(-1)`
    B
    `2xx10^(3)NC^(-1)`
    C
    `3xx10^(3)NC^(-1)`
    D
    `1.33xx10^(3)NC^(-1)`

  • The electric field due to a charge at a distance of 3 m from it is 500 NC^(-1) . The magnitude of the charge is [(1)/(4 pi epsi_(0)) = 9 xx 10^(9) N - m^(2)//C^(2)]

    A
    `2.5 muC`
    B
    `2.0 muC`
    C
    `1.0 muC`
    D
    `0.5 muC`

    • Similar Questions

    Explore conceptually related problems

    Calculate the electric and magnetic fields produced by the radiation coming form a 30piW bulb at a distance of 3m . Assume that the efficiency of the bulb is 10% and it is a point source.

    Calculate the peak values of electric and magnetic fields produces by the radiation coming form a 100watt bulb at a distance of 3m. Assume that the efficiency of the bulb is 2.5% and it is a point source?

    Find the values of electric and magnetic field produced by a radiation coming from 200 W bulb. The bulb is placed at a distance of 5 m from the point of observation.

    An electric bulb of power 30piW has an efficiency of 10% and it can be assumed to behave like a point source of light. At a distance of 3 m from the bulb, the peak value of the electric field in the light produced by the bulb is ["Take "epsilon_(0)~~9xx10^(-12)C^(2)N^(-1)m^(-2)]

    Manitude of the electric and magnetic field in an electromagnetic wave radiated by a 200 W bulb at a distance 2m from it is assuming efficiency of bulb is 5% and it behaves like a point source.

    Home
    Profile