Question

Which one of the following frequency ranges is used for TV transmission?

• A. 30 - 300 Hz
• B. 30 - 300 kHz
• C. 30 - 300 MHz
• D. 30 - 300 GHz

Hint:

TV transmission uses the VHF and UHF bands, which fall within the 30 MHz to 300 MHz frequency range.

Answer 1

The Correct Option is C

Step 1: Understanding TV transmission frequencies.
TV transmission utilizes electromagnetic waves in the radio frequency spectrum. The typical range for TV broadcast is between 30 MHz to 300 MHz. This range is commonly used for UHF and VHF channels in analog and digital TV transmission.
Step 2: Explanation of frequency ranges.
- (A) 30 - 300 Hz: This is a very low frequency range, used for signals such as audio frequencies, not for TV.
- (B) 30 - 300 kHz: This range is used for AM radio transmission, not for TV.
- (C) 30 - 300 MHz: This is the correct frequency range for TV transmission (UHF and VHF).
- (D) 30 - 300 GHz: This range is far higher than what is used for TV broadcasting, typically used for microwave transmission.
Step 3: Conclusion.
The correct frequency range for TV transmission is 30 - 300 MHz.
\[ \boxed{\text{Correct Answer: 30 - 300 MHz}} \]