Cengage JEE Mains Physics by B.M Sharma
A TV tower has a height of 100m. How much population is covered by TV broadcast. If the average population density around the tower is 1000 km^−2 ? (radius of earth = 6.4×10^6 m)
04
Jun
A TV tower has a height of 100m. How much population is covered by TV broadcast. If the average population density around the tower is 1000 km^−2 ? (radius of earth = 6.4×10^6 m) A TV tower has a height of 100m. How much population is covered by TV broadcast. If the average population density [...]
A plane electromagnetic wave of intensity of 10W/m^2 strikes a small mirror of area 20cm^2, held perpendicular to the approaching wave. The radiation force on the mirror will be:
04
Jun
A plane electromagnetic wave of intensity of 10W/m^2 strikes a small mirror of area 20cm^2, held perpendicular to the approaching wave. The radiation force on the mirror will be: A plane electromagnetic wave of intensity of 10W/m^2 strikes a small mirror of area 20cm^2 held perpendicular to the approaching wave. The radiation force on the [...]
The average energy-density of electromagnetic wave given by E=(50N/C)sin(ωt−kx) will be nearly:
04
Jun
The average energy-density of electromagnetic wave given by E=(50N/C)sin(ωt−kx) will be nearly: The average energy-density of electromagnetic wave given by E=(50N/C)sin(ωt−kx) will be nearly: June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 25 - Electromagnetic Waves ,
A place electromagnetic wave Fs=100cos(6×10^8t+4x)V/m Propagates in a medium of dielectric constant.
04
Jun
A place electromagnetic wave Fs=100cos(6×10^8t+4x)V/m Propagates in a medium of dielectric constant. A place electromagnetic wave Fs=100cos(6×10^8t+4x)V/m Propagates in a medium of dielectric constant. June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 25 - Electromagnetic Waves ,
Instantaneous displacement current of 1.0 A in the space between the parallel plates of 1μF capacitor can be established by changing potential difference of:
04
Jun
Instantaneous displacement current of 1.0 A in the space between the parallel plates of 1μF capacitor can be established by changing potential difference of: Instantaneous displacement current of 1.0 A in the space between the parallel plates of 1μF capacitor can be established by changing potential difference of: June 4, 2021 Category: Cengage JEE Mains [...]
A plane electromagnetic wave of wave intensity 6W/m^2 strikes a small mirror of area 39 cm^2, held perpendicular to the approaching wave. The momentum transferred in kgms^−1 by the wave to the mirror each second will be
04
Jun
A plane electromagnetic wave of wave intensity 6W/m^2 strikes a small mirror of area 39 cm^2, held perpendicular to the approaching wave. The momentum transferred in kgms^−1 by the wave to the mirror each second will be A plane electromagnetic wave of wave intensity 6W/m^2 strikes a small mirror of area 39 cm^2 held perpendicular [...]
A parallel plate capacitor consists of two circular plates each of radius 12 cm and separated by 5.0 mm. The capacitor is being charge by an external source. The charging current is constant and is equal to 0.15 A. The rate of change of potential difference between the plate will be
04
Jun
A parallel plate capacitor consists of two circular plates each of radius 12 cm and separated by 5.0 mm. The capacitor is being charge by an external source. The charging current is constant and is equal to 0.15 A. The rate of change of potential difference between the plate will be The wave associated with [...]
The sun delivers 10^3W/m^2 of electromagnetic flux to the earth’s surface. The total power that is incident on a roof of dimensions 8m×20m, will be
04
Jun
The sun delivers 10^3W/m^2 of electromagnetic flux to the earth’s surface. The total power that is incident on a roof of dimensions 8m×20m, will be The sun delivers 10^3W/m^2 of electromagnetic flux to the earth's surface. The total power that is incident on a roof of dimensions 8m×20m will be June 4, 2021 Category: Cengage [...]
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: [...]