and radio waves of wave length 500 m?
Given below are some famous numbers associated with electromagnetic radiations in different contexts in physics. State the part of the electromagnetic spectrum to which each belongs. (a) 21 cm (wavelength emitted by atomic hydrogen in interstellar space). (b) 1057 MHz (frequency of radiation arising from two close energy levels in hydrogen, known as Lamb shift). (c) 2.7 K [temperature associated with the isotropic radiation filling all space-thought to be a relic of the ‘big-bang’ origin of the universe]. (d) 5890Aˆ−5896Aˆ (double lines of sodium] (e) 14.4keV energy of a particular transition in .57Fe nucleus associated with a famour high resolution spectroscopic method (mossbauer spectroscopy).
08
Sep
Given below are some famous numbers associated with electromagnetic radiations in different contexts in physics. State the part of the electromagnetic spectrum to which each belongs. (a) 21 cm (wavelength emitted by atomic hydrogen in interstellar space). (b) 1057 MHz (frequency of radiation arising from two close energy levels in hydrogen, known as Lamb shift). [...]
About 5 percent of the power of a 100 W light bulb is converted to visible radiation. what is the average intensity of visible radiation a) at a distance of 1 m from the bulb ? b) at a distance of 10 m ? assume that the radition is emitted isotrophically and neglect reflection.
08
Sep
About 5 percent of the power of a 100 W light bulb is converted to visible radiation. what is the average intensity of visible radiation a) at a distance of 1 m from the bulb ? b) at a distance of 10 m ? assume that the radition is emitted isotrophically and neglect reflection. and [...]
Suppose that the electric field part of an electromagnetic wave in vacuum is E=(3.1N/C)cos[(1.8rad/m)y+(5.4×10 6 rad/s)t] i ^ (a) What is the direction of propagation? (b) What is the wavelength λ ? (c) What is the frequency v? (d) What is the amplitude of the magnetic field part of the wave? (e) Write an expression for the magnetic field part of the wave.
08
Sep
Suppose that the electric field part of an electromagnetic wave in vacuum is E=(3.1N/C)cos[(1.8rad/m)y+(5.4×10 6 rad/s)t] i ^ (a) What is the direction of propagation? (b) What is the wavelength λ ? (c) What is the frequency v? (d) What is the amplitude of the magnetic field part of the wave? (e) Write an expression [...]
The fol.lowing figure shows capacitor made of two circular plates. The capacitor is being charged by an external source which supply constant current equal to 15 A. Obtain displacement charged by constant current across plates. Given dv / dt = 1.87 x 10^9 V /s
08
Sep
The fol.lowing figure shows capacitor made of two circular plates. The capacitor is being charged by an external source which supply constant current equal to 15 A. Obtain displacement charged by constant current across plates. Given dv / dt = 1.87 x 10^9 V /s and radio waves of wave length 500 m? What physical [...]
What physical quantity is the same for X-rays of wave length 6800 A, and radio waves of wave length 500 m?
08
Sep
What physical quantity is the same for X-rays of wave length 6800 A, and radio waves of wave length 500 m? and radio waves of wave length 500 m? What physical quantity is the same for X-rays of wave length 6800 A September 8, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]