1. On the surface of the earth we receive about 1.37 kW of energy
per square meter from the sun. Calculate the electric field associated
with the sunlight (on the surface of the earth) assuming that it is
essentially monochromatic with l= 6000Å.[Ans. ~1000 V/m] Get solution
2. (a) On the surface of the earth we receive about 1370 W m-2 of energy. Show that the radiation pressure is about 4.6 μPa (1 Pa = 10-5 N m-2 ).(b) A 100 W sodium lamp (λ ≈ 5890 Å) is assumed to emit waves uniformly in all directions. What is the radiation pressure on a plane mirror at distance of 10 m from the bulb? Get solution
3. A 1 kW transmitter is emitting electromagnetic waves of (of wavelength 40 m) uniformly in all directions. Calculate the electric field at a distance of 1 km from the transmitter. Get solution
4. Ocean water can be assumed to be a non –magnetic dielectric with ... and ...mhos/m. (a) Calculate the frequency at which the penetration depth will be 10 cm. (b) Show that for frequencies less than 108 s-1, it can be considered as a good conductor.[Ans (a) ~6×106 s–1] Get solution
5. For silver one may assume ...and ...mhos/m. Calculate the skin depth at 108 s–1.[Ans. ...cm] Get solution
6. Show that for frequencies ≲ 108 sec-1, a sample of silicon will act like a good conductor. For silicon one may assume ...and ...mhos/cm. Also calculate the penetration depth for this sample at .... Get solution
7. In a conducting medium show that H also satisfies an equation similar to Eq. (94). Get solution
8. Using the analysis given in Sec. 23.7 and assuming ... (which is valid for an insulator) show that... and... where... Get solution
9. For the glass used in a typical optical fiber at ...Å, ......mhos/m. Calculate ...and show that we can use the formulae given in the previous problem. Calculate β and loss in dB/km. [Hint : the power would decrease as exp (–2 βz); loss in dB/km is defined in Sec. 24.8][Ans. ...m-1 ; loss ≈ 3.7 dB/km] Get solution
2. (a) On the surface of the earth we receive about 1370 W m-2 of energy. Show that the radiation pressure is about 4.6 μPa (1 Pa = 10-5 N m-2 ).(b) A 100 W sodium lamp (λ ≈ 5890 Å) is assumed to emit waves uniformly in all directions. What is the radiation pressure on a plane mirror at distance of 10 m from the bulb? Get solution
3. A 1 kW transmitter is emitting electromagnetic waves of (of wavelength 40 m) uniformly in all directions. Calculate the electric field at a distance of 1 km from the transmitter. Get solution
4. Ocean water can be assumed to be a non –magnetic dielectric with ... and ...mhos/m. (a) Calculate the frequency at which the penetration depth will be 10 cm. (b) Show that for frequencies less than 108 s-1, it can be considered as a good conductor.[Ans (a) ~6×106 s–1] Get solution
5. For silver one may assume ...and ...mhos/m. Calculate the skin depth at 108 s–1.[Ans. ...cm] Get solution
6. Show that for frequencies ≲ 108 sec-1, a sample of silicon will act like a good conductor. For silicon one may assume ...and ...mhos/cm. Also calculate the penetration depth for this sample at .... Get solution
7. In a conducting medium show that H also satisfies an equation similar to Eq. (94). Get solution
8. Using the analysis given in Sec. 23.7 and assuming ... (which is valid for an insulator) show that... and... where... Get solution
9. For the glass used in a typical optical fiber at ...Å, ......mhos/m. Calculate ...and show that we can use the formulae given in the previous problem. Calculate β and loss in dB/km. [Hint : the power would decrease as exp (–2 βz); loss in dB/km is defined in Sec. 24.8][Ans. ...m-1 ; loss ≈ 3.7 dB/km] Get solution
