Q. TV waves have a wavelength range of 1-10$\ meter$. Their frequency range in $MHz$ is
A) 30-300
B) 3-30
C) 300-3000
D) 3-3000
Explanation
(a) $v = \frac{C}{\lambda} \Rightarrow v_{1} = \frac{3 \times 10^{8}}{1} = 3 \times 10^{8}Hz = 300\ MHz$
and $v_{2} = \frac{3 \times 10^{8}}{10} = 3 \times 10^{7}Hz = 30MHz$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.