Chapter 25 – Electromagnetic Waves
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A flood light is covered with filter that transmits red light. The electric field of the emerging beam is represented by a sinusoidal plane wave Ex=36sin(1.2 ×10^7z – 3.6×10^15 t) V/m. The average intensity of beam in watt/ metre^2 will be
04
Jun
A flood light is covered with filter that transmits red light. The electric field of the emerging beam is represented by a sinusoidal plane wave Ex=36sin(1.2 ×10^7z – 3.6×10^15 t) V/m. The average intensity of beam in watt/ metre^2 will be The wave associated with 2.7 K belongs to June 4, 2021 Category: Cengage JEE [...]
The transmitting antenna of a radio-station is mounted vertically. At a point electric field is 10 Km due north of the transmitter the peak electric field is 10^−3 volt/m meter. The amplitude of the radiated magnetic magnetic field is:
04
Jun
The transmitting antenna of a radio-station is mounted vertically. At a point electric field is 10 Km due north of the transmitter the peak electric field is 10^−3 volt/m meter. The amplitude of the radiated magnetic magnetic field is: The percentage power of X- ray increases with the increases in its June 4, 2021 Category: [...]
A radiowave has a maximum electric field intensity of 10^–4 V m^-1 on arrival at a receiving antenna. The maximum magnetic flux density of such a wave is
04
Jun
A radiowave has a maximum electric field intensity of 10^–4 V m^-1 on arrival at a receiving antenna. The maximum magnetic flux density of such a wave is A radiowave has a maximum electric field intensity of 10^–4 V m^-1 on arrival at a receiving antenna. The maximum magnetic flux density of such a wave [...]
The frequency 1057 MHz of radiation arising from two close energy levels in hydrogen belong to.
04
Jun
The frequency 1057 MHz of radiation arising from two close energy levels in hydrogen belong to. The frequency 1057 MHz of radiation arising from two close energy levels in hydrogen belong to. June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 25 - Electromagnetic Waves ,
The wave associated with 2.7 K belongs to
04
Jun
The wave associated with 2.7 K belongs to The wave associated with 2.7 K belongs to June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 25 - Electromagnetic Waves ,
An electromagnetic wave travels along z -axis. Which of the following pairs of space and time varying fields would generate such a wave.
04
Jun
An electromagnetic wave travels along z -axis. Which of the following pairs of space and time varying fields would generate such a wave. An electromagnetic wave travels along z -axis. Which of the following pairs of space and time varying fields would generate such a wave. June 4, 2021 Category: Cengage JEE Mains Physics by [...]
The sum delivers 10^4 W/m^2 of electromagnetic flux to earth’s surface. The total power that is incident on a roof of dimensions (10×10)m^2 will be:
04
Jun
The sum delivers 10^4 W/m^2 of electromagnetic flux to earth’s surface. The total power that is incident on a roof of dimensions (10×10)m^2 will be: The sum delivers 10^4 W/m^2 of electromagnetic flux to earth's surface. The total power that is incident on a roof of dimensions (10×10)m^2 will be: June 4, 2021 Category: Cengage [...]
The wave of wavelength 5900Å emitted by any atom or molecule must have some finite total length which known as coherence length. For sodium light, this length is 2.4cm. The number of oscillation in this length will be,
04
Jun
The wave of wavelength 5900Å emitted by any atom or molecule must have some finite total length which known as coherence length. For sodium light, this length is 2.4cm. The number of oscillation in this length will be, The wave of wavelength 5900Å emitted by any atom or molecule must have some finite total length [...]
If a source is transmitting electromagnetic wave of frequency 8.2 × 10^6Hz then the wavelength of the electromagnetic waves transmitted from the source will be
04
Jun
If a source is transmitting electromagnetic wave of frequency 8.2 × 10^6Hz then the wavelength of the electromagnetic waves transmitted from the source will be If a source is transmitting electromagnetic wave of frequency 8.2 × 10^6Hz then the wavelength of the electromagnetic waves transmitted from the source will be June 4, 2021 Category: Cengage [...]
The energy of X-rays photon is 3.3 x 10^-16 J. Its frequency is
04
Jun
The energy of X-rays photon is 3.3 x 10^-16 J. Its frequency is The energy of X-rays photon is 3.3 x 10^-16 J. Its frequency is June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 25 - Electromagnetic Waves ,