Question: Which of the following describes the Nyquist theorem?

Options:

1. Signals can be reconstructed if sampled at twice the highest frequency
2. Signals can be amplified without distortion
3. Signals can be compressed without loss
4. Signals can be filtered without delay

Correct Answer: Signals can be reconstructed if sampled at twice the highest frequency

Solution:

The Nyquist theorem states that a signal can be accurately reconstructed if it is sampled at a rate greater than twice its highest frequency.