Q. The velocity of sound in air is $330ms^{- 1}$ and the velocity of light in air is $3 \times 10^{8}ms^{- 1}$. What frequency, in Hz does a BBC station which transmits at 1500m broadcast?
A) $2 \times 10^{5}Hz\ $
B) $595 \times 10^{3}Hz$
C) $0.22\ Hz\ $
D) $5 \times 10^{- 6}Hz$
Explanation
(a) $v = \frac{c}{\lambda} = \frac{3 \times 10^{8}}{1500} = 2 \times 10^{5}\ Hz$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.