Optics Question 301

Question: TV waves have a wavelength range of 1-10 meter. Their frequency range in MHz is

[KCET 1998]

Options:

A) 30-300

B) 3-30

C) 300-3000

D) 3-3000

Show Answer

Answer:

Correct Answer: A

Solution:

$ 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 $



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