Question

Which frequency range is used for optical communication?

• A. $100000\mathrm{GHz}\mathrm{to}400000\mathrm{GHz}$
• B. $200\mathrm{kHz}\mathrm{to}3\mathrm{MHz}$
• C. $30000\mathrm{GHz}\mathrm{to}6000\mathrm{GHz}$
• D. None of the above

Answer 1

The correct option is A

$100000\mathrm{GHz}\mathrm{to}400000\mathrm{GHz}$

1. The method of communication where information is transmitted via light is known as optical communication.
2. Light carries information and travels from the transmitter to the receiver.
3. Since light is the carrier of information in optical communication, its range will be around the range of visible light.

Hence, option A is correct, the range will be $100000\mathrm{GHz}\mathrm{to}400000\mathrm{GHz}$.