Question

The background temperature of the universe is a) \(6000 \mathrm{~K}\). b) \(288 \mathrm{~K}\). c) \(3 \mathrm{~K}\). d) \(2.725 \mathrm{~K}\). e) \(0 \mathrm{~K}\).

Short answer

a) 6000 K b) 288 K c) 3 K d) 2.725 K e) 0 K Answer: d) 2.725 K

Step-by-step solution

Understand Cosmic Microwave Background temperature

The Cosmic Microwave Background (CMB) temperature is the remnant radiation from the Big Bang that fills the entire universe and represents the temperature of the universe.

Comparing the given options

We have 5 options to choose from: a) \(6000 \mathrm{~K}\) b) \(288 \mathrm{~K}\) c) \(3 \mathrm{~K}\) d) \(2.725 \mathrm{~K}\) e) \(0 \mathrm{~K}\)

Select the correct value for the CMB temperature

The Cosmic Microwave Background temperature was precisely measured by the COBE satellite and found to be \(2.725 \mathrm{~K}\). Thus, the correct answer is: d) \(2.725 \mathrm{~K}\)