Question

Why negative value cant be in case of kelvin scale?

Answer 1

On the Kelvin scale the coldest temperature possible, -273 oC, has a value of 0 Kelvin (0 K) and is called the absolute zero. Because thereare no lower temperatures than 0 K, the Kelvin scale does not have negative numbers

Or in detail attaining temperature below absolute zerois not possible. At the physically impossible-to-reach temperature of zero kelvin, or minus 459.67 degrees Fahrenheit (minus 273.15 degrees Celsius), atoms would stop moving. As such, nothing can be colder than absolute zero on the Kelvin scale.