A radio station transmits waves of wavelength 4 m

PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation

Problem

17. A

50,000 \mathrm{~W}

radio station transmits waves of wavelength 4 m . Which of the following is the best estimate of the number of photons it emits per second? (A)

10^{22}

(B)

10^{30}

(C)

10^{40}

(D)

10^{56}