2006-10-14 17:15:42 · 4 answers · asked by Cloe 1 in Science & Mathematics ➔ Physics
frequency (f) is just the reciprocal of period (T)
f = 1 / T
the wavelength (lambda) depends on how fast
the wave is traveling which in this case is c = speed of light
lambda = c * T
or lambda = c / f
so
f = 1 / (10^-9 s) = 10^9 cycles / s = 10^9 Hz = 1 GHz
lambda = ( 3*10^8 m / s ) * 10^-9 s = 0.3 m
2006-10-14 17:27:56 · answer #1 · answered by Anonymous · 0⤊ 0⤋
(a) Given, Period T = 1 ns.= 10-9 s.
Frequency f = 1/T = 1/10-9 = 10*9 per second = 1GHz
(b) Wavelength, lampda = ? Use the formula c = f. lampda
Wavelength, lampda = c/f = 3.00x10*8/10*9 = 0.3m = 30 cm.
2006-10-14 19:52:50 · answer #2 · answered by Entho 2 · 0⤊ 0⤋
1 GHz. Wavelength=30 cm. That's in the microwave region.
2006-10-14 17:23:24 · answer #3 · answered by zee_prime 6 · 0⤊ 0⤋
Frequency and wave length are related via velocity of light . That formula must be in your school book. Dig that out and apply.
2006-10-14 17:21:22 · answer #4 · answered by Rajesh Kochhar 6 · 0⤊ 1⤋